{"id":42180,"date":"2024-07-11T11:03:30","date_gmt":"2024-07-11T09:03:30","guid":{"rendered":"https:\/\/xometry.pro\/articles\/impact-post-processing-dimensional-accuracy\/"},"modified":"2025-05-22T17:59:58","modified_gmt":"2025-05-22T15:59:58","slug":"impact-post-processing-dimensional-accuracy","status":"publish","type":"articles","link":"https:\/\/xometry.pro\/en-uk\/articles\/impact-post-processing-dimensional-accuracy\/","title":{"rendered":"Impact of Post-Processing on Dimensional Accuracy of Parts"},"content":{"rendered":"<div role=\"navigation\" aria-label=\"Table of Contents\" class=\"simpletoc wp-block-simpletoc-toc\"><h2 class=\"simpletoc-title\">Table of Contents<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#h-common-post-processing-techniques-in-manufacturing\">Common Post-Processing Techniques in Manufacturing<\/a>\n\n<\/li>\n<li><a href=\"#how-different-postprocessing-techniques-impact-dimensional-accuracy\">How Different Post-processing Techniques Impact Dimensional Accuracy<\/a>\n\n<\/li>\n<li><a href=\"#regulations-and-standards-for-maintaining-dimensional-accuracy-during-postprocessing\">Regulations and Standards for Maintaining Dimensional Accuracy During Post-processing<\/a>\n\n<\/li>\n<li><a href=\"#tools-and-technology-for-monitoring-and-controlling-dimensional-changes\">Tools and Technology for Monitoring and Controlling Dimensional Changes<\/a>\n\n<\/li>\n<li><a href=\"#h-how-to-reflect-tolerances-on-technical-drawings\">How to Reflect Tolerances on Technical Drawings<\/a>\n<\/li><\/ul><\/div>\n\n\n<p>In <a href=\"https:\/\/xometry.uk\/cnc-machining\/\" target=\"_blank\" rel=\"noreferrer noopener\">traditional manufacturing<\/a> and <a href=\"https:\/\/xometry.uk\/3d-printing\/\" target=\"_blank\" rel=\"noreferrer noopener\">additive manufacturing<\/a>, the design and production phases are often the main focus. However, end products, whether they are industrial machines or electronic devices, often require post-processing to enhance their appearance or durability characteristics.<\/p>\n\n\n\n<p><a href=\"https:\/\/xometry.pro\/en-eu\/articles\/post-processing-eu\/\">Post-processing<\/a> in traditional manufacturing includes machining, polishing, and coating to smooth surfaces, remove excess material, or apply protective finishes. Additive manufacturing employs specific methods like support removal, surface smoothing, spray painting, and curing. For instance, resin 3D prints require UV light or heat post-curing to solidify and enhance their mechanical properties.<\/p>\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-uk\/articles\/cnc-machining-finishes\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-bead-blasting.png\" alt=\"Bead blasted\"><\/a><a href=\"https:\/\/xometry.pro\/en-uk\/articles\/cnc-machining-finishes\/\" class=\"aside-link\">Surface Finishes for CNC Machining<\/a>    <\/aside>\r\n    \n\n\n<p>But what impact does post-processing have on the dimensional accuracy of parts? Will the part expand or contract? These are critical questions to consider when creating a 3D model to ensure that the part meets design specifications, functions correctly, and fits together seamlessly.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-1024x768.jpg\" alt=\"A person using a digital caliper to measure the thickness of a black 3D-printed part, with the caliper\" class=\"wp-image-41969\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-1024x768.jpg 1024w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-300x225.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-768x576.jpg 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-1536x1152.jpg 1536w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-2048x1536.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-scaled.jpg\" data-fancybox=\"gallery-42180\" data-caption=\"Measuring the accuracy of a vapour-smoothed 3D-printed part using a digital calliper.\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/vapor-smoothed-part-accuracy-scaled.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Measuring the accuracy of a vapour-smoothed 3D-printed part using a digital calliper.<\/figcaption><\/figure>\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-uk\/articles\/3d-printing-finishes\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/12\/Closeup-of-a-SLS-PA12-3D-printed-part-with-black-dying-and-vapour-smoothing-.webp\" alt=\"\"><\/a><a href=\"https:\/\/xometry.pro\/en-uk\/articles\/3d-printing-finishes\/\" class=\"aside-link\">Surface Finishes for 3D Printing<\/a>    <\/aside>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"h-common-post-processing-techniques-in-manufacturing\"><strong>Common Post-Processing Techniques in Manufacturing<\/strong><\/h2>\n\n\n<p>In designing, post-processing is important since it enhances part aesthetics as well as functionality. This also implies that it affects dimensional accuracy. There are several typical post-processing methods which are employed in CNC machining, sheet metal fabrication, and 3D printing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bead blasting:<\/strong> This technique uses a high-pressure stream of small beads, often made from glass or plastic, directed at the surface of the part, removing any faults it has and making it even all over. The process can smooth sharp edges slightly, thereby possibly changing key dimensions, particularly where intricate detail abounds.<\/li>\n\n\n\n<li><strong>Electropolishing:<\/strong> This is an electrochemical method that removes very thin layers from steel, ensuring shiny surfaces after cleaning. However, the removal process produces bluntness, and results in minimal adjustments to fit precision requirements due to dimension changes.<\/li>\n\n\n\n<li><strong>Vapour smoothing:<\/strong> Vapour smoothing involves bringing objects created from 3D printing in contact with chemical vapors, resulting in melting and regulating the outer surfaces. This process may alter small features and round off sharp edges, particularly for finely detailed parts.<\/li>\n\n\n\n<li><strong>Media tumbling: <\/strong>In addition to burr removal, media tumbling also polishes surfaces through placing them into vibratory containers fitted with abrasive media. This process is not suitable for fragile part features like sharp edges.<\/li>\n\n\n\n<li><strong>Sandblasting:<\/strong> Sandblasting uses high-speed particles for cleaning surfaces as well as texturing prior to painting or other treatments.<\/li>\n\n\n\n<li><strong>Powder coating:<\/strong> Here, dry powders are applied electrostatically onto an object that will then be heated to cure the coat into a long-lasting one. However, the process increases dimensions slightly and may cause trouble in fitting tight components together.<\/li>\n\n\n\n<li><strong>Plating:<\/strong> Plating involves depositing a metallic coating onto a surface to enhance electrical conductivity, wear resistance, and corrosion protection.<\/li>\n\n\n\n<li><strong>Anodising:<\/strong> Anodising, which comes in different types (Type II and Type III being the most commonly used), is an electrochemical process used for increasing the oxide layer on metal surfaces.<\/li>\n\n\n\n<li><strong>Passivation:<\/strong> This is the process by which stainless steel parts are treated to remove free iron and obtain better resistance to corrosion through the formation of a protective oxide layer. <\/li>\n\n\n\n<li><strong>Spray painting:<\/strong> This process is used to apply paint to parts for aesthetics and protection, potentially altering dimensions slightly.<\/li>\n<\/ul>\n\n\n    <section class=\"article-author-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <div class=\"author-block\">\r\n                            <\/div>\r\n                <div class=\"quote-block\" style=\"border-color: #0E6AED;\">\r\n                    <p>Some post-processing methods can be combined for enhanced results, such as vapour smoothing followed by spray painting to achieve a smooth, coloured surface, or sandblasting followed by anodising for a matte, corrosion-resistant finish.<\/p>\n                <\/div>\r\n        <\/div>\r\n    <\/section>\r\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/www.youtube.com\/playlist?list=PLQSLwu4VbvzKgzu9I6xGv3uc_0V32M377\" target=\"_blank\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finishing-icon.svg\" alt=\"\"><\/a><a href=\"https:\/\/www.youtube.com\/playlist?list=PLQSLwu4VbvzKgzu9I6xGv3uc_0V32M377\" target=\"_blank\" class=\"aside-link\">Watch Our &#8220;Post-Processing Explained&#8221; Videos<\/a>    <\/aside>\r\n    \n\n    <section class=\"article-slider-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <!-- Swiper -->\r\n            <div class=\"swiper mySwiper2 article-slider-display\">\r\n                <div class=\"swiper-wrapper\">\r\n                                                <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-bead-blasting.png\" alt=\"Bead blasted\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-bead-blasting.png\" data-fancybox=\"gallery\" data-caption=\"Bead blasting\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-bead-blasting.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"Bead blasted\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Bead blasting<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-electropolishing.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-electropolishing.png\" data-fancybox=\"gallery\" data-caption=\"Electropolishing\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-electropolishing.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Electropolishing<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-media-tumbling.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-media-tumbling.png\" data-fancybox=\"gallery\" data-caption=\"Media tumbling\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-media-tumbling.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Media tumbling<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/Powder-Coating-Render-RAL-9004-Signal-Black-1.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/Powder-Coating-Render-RAL-9004-Signal-Black-1.png\" data-fancybox=\"gallery\" data-caption=\"Powder coating\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/Powder-Coating-Render-RAL-9004-Signal-Black-1.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Powder coating<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-plating-silver.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-plating-silver.png\" data-fancybox=\"gallery\" data-caption=\"Silver plating\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-plating-silver.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Silver plating<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-anodizing-type-II-black.png\" alt=\"Anodizing black\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-anodizing-type-II-black.png\" data-fancybox=\"gallery\" data-caption=\"Anodising (Type II)\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-anodizing-type-II-black.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"Anodizing black\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Anodising (Type II)<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-passivation.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-passivation.png\" data-fancybox=\"gallery\" data-caption=\"Passivation\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-passivation.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Passivation<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/12\/SLS-PA12-3D-printed-part-with-a-black-spray-painting-finish.webp\" alt=\"SLS PA12 3D printed part with a black spray painting finish\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/12\/SLS-PA12-3D-printed-part-with-a-black-spray-painting-finish.webp\" data-fancybox=\"gallery\" data-caption=\"Spray painting\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/12\/SLS-PA12-3D-printed-part-with-a-black-spray-painting-finish.webp\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"SLS PA12 3D printed part with a black spray painting finish\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Spray painting<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/sls-pa11-media-tumbled-front-sample-part-xometry-1440x1153-1.webp\" alt=\"SLS PA media tumbled\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/sls-pa11-media-tumbled-front-sample-part-xometry-1440x1153-1.webp\" data-fancybox=\"gallery\" data-caption=\"Media tumbling\" aria-label=\"Open full image\"0>\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/sls-pa11-media-tumbled-front-sample-part-xometry-1440x1153-1.webp\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"SLS PA media tumbled\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Media tumbling<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/MJF-PA12-Natural-Vapour-Fusion-Front-scaled.jpg\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/MJF-PA12-Natural-Vapour-Fusion-Front-scaled.jpg\" data-fancybox=\"gallery\" data-caption=\"Vapour smoothing\" aria-label=\"Open full image\"1>\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/MJF-PA12-Natural-Vapour-Fusion-Front-scaled.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Vapour smoothing<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                            <\/div>\r\n            <\/div>\r\n            <div thumbsSlider=\"\" class=\"swiper mySwiper article-slider-list\">\r\n                <div class=\"swiper-wrapper\">\r\n                                            <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-bead-blasting.png\" alt=\"Bead blasted\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-electropolishing.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-media-tumbling.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/Powder-Coating-Render-RAL-9004-Signal-Black-1.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-plating-silver.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/06\/finish-render-anodizing-type-II-black.png\" alt=\"Anodizing black\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/finish-render-passivation.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/12\/SLS-PA12-3D-printed-part-with-a-black-spray-painting-finish.webp\" alt=\"SLS PA12 3D printed part with a black spray painting finish\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/08\/sls-pa11-media-tumbled-front-sample-part-xometry-1440x1153-1.webp\" alt=\"SLS PA media tumbled\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/MJF-PA12-Natural-Vapour-Fusion-Front-scaled.jpg\" alt=\"\">\r\n                        <\/div>\r\n                                        <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/section>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"how-different-postprocessing-techniques-impact-dimensional-accuracy\"><strong>How Different Post-processing Techniques Impact Dimensional Accuracy<\/strong><\/h2>\n\n\n<p>When considering post-processing for parts, it is important to understand how each technique impacts both dimensional accuracy and surface finish. The table below compares different post-processing methods (all available on <a href=\"https:\/\/get.xometry.uk\/?locale=en\" target=\"_blank\" rel=\"noreferrer noopener\">Xometry\u2019s Instant Quoting Engine\u00ae<\/a>), including their effects on the material\u2019s dimensional accuracy and the typical surface finish you can expect.<\/p>\n\n\n<div class=\"custom-table-block table-with-white-space\" id=\"table-id-321\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-321\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%; height: 816px;\">\n<tbody>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><b>Technique<\/b><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><b>Dimensional<br \/>\nChange<\/b><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><b>Surface<br \/>\nFinish<\/b><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><b>Typical<br \/>\nApplications<\/b><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><b>Materials They<br \/>\nWork With<\/b><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Bead Blasting<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Negligible\u00a0<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Matte\/satin,<br \/>\ngrainy<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Aesthetic finishing, surface<br \/>\npreparation for coatings<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Metals, plastics,<br \/>\ncomposites<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 17.5258%; height: 72px;\"><span style=\"font-weight: 400;\">Electropolishing<\/span><\/td>\n<td style=\"width: 18.9433%; height: 72px;\"><span style=\"font-weight: 400;\">Slight reduction (0.00635 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 72px;\"><span style=\"font-weight: 400;\">Bright, smooth<\/span><\/td>\n<td style=\"width: 30.9278%; height: 72px;\"><span style=\"font-weight: 400;\">Improving corrosion resistance and smoothing out micro-peaks and valleys<\/span><\/td>\n<td style=\"width: 16.7526%; height: 72px;\"><span style=\"font-weight: 400;\">Stainless steel, aluminium, copper<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Vapour Smoothing<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Minor reduction (~0.023 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Glossy, smooth<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Enhancing surface quality of 3D printed parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Thermoplastics<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 17.5258%; height: 24px;\"><span style=\"font-weight: 400;\">Media Tumbling<\/span><\/td>\n<td style=\"width: 18.9433%; height: 24px;\"><span style=\"font-weight: 400;\">Negligible<\/span><\/td>\n<td style=\"width: 15.7216%; height: 24px;\"><span style=\"font-weight: 400;\">Satin-like finish<\/span><\/td>\n<td style=\"width: 30.9278%; height: 24px;\"><span style=\"font-weight: 400;\">Parts with smoothed surface<\/span><\/td>\n<td style=\"width: 16.7526%; height: 24px;\"><span style=\"font-weight: 400;\">Metals, plastics<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 17.5258%; height: 72px;\"><span style=\"font-weight: 400;\">Sand Blasting<\/span><\/td>\n<td style=\"width: 18.9433%; height: 72px;\"><span style=\"font-weight: 400;\">Slight reduction (~0.005\u20130.025 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 72px;\"><span style=\"font-weight: 400;\">Dull finish<\/span><\/td>\n<td style=\"width: 30.9278%; height: 72px;\"><span style=\"font-weight: 400;\">Surface preparation for paint<\/span><\/td>\n<td style=\"width: 16.7526%; height: 72px;\"><span style=\"font-weight: 400;\">Metals, plastics<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Powder Coating<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Addition (~0.02\u20130.05 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Matte or glossy, coloured<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Wear-resistant parts, aesthetics<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Metals, plastics<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Plating<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Addition (~0.005\u20130.025 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Metallic finish<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Electrical components, wear-resistant parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Metals (e.g., copper, nickel)<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Passivation<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Negligible<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Matte, enhanced resistance<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Aesthetic enhancements, surface protection<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Stainless steel<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Spray Painting<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Addition (~0.02\u20130.1 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Smooth, coloured<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Surface enhancement and protection\u00a0<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Metals, plastics<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 17.5258%; height: 48px;\"><span style=\"font-weight: 400;\">Anodising (Type II)<\/span><\/td>\n<td style=\"width: 18.9433%; height: 48px;\"><span style=\"font-weight: 400;\">Addition (~0.0025 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 48px;\"><span style=\"font-weight: 400;\">Matte or glossy, coloured<\/span><\/td>\n<td style=\"width: 30.9278%; height: 48px;\"><span style=\"font-weight: 400;\">Corrosion resistance, durable parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 48px;\"><span style=\"font-weight: 400;\">Aluminium<\/span><\/td>\n<\/tr>\n<tr style=\"height: 96px;\">\n<td style=\"width: 17.5258%; height: 96px;\"><span style=\"font-weight: 400;\">Anodising (Type III)<\/span><\/td>\n<td style=\"width: 18.9433%; height: 96px;\"><span style=\"font-weight: 400;\">Addition (~0.025 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 96px;\"><span style=\"font-weight: 400;\">Matte or slightly rough, coloured<\/span><\/td>\n<td style=\"width: 30.9278%; height: 96px;\"><span style=\"font-weight: 400;\">High-wear applications, mechanical components, corrosion resistance,\u00a0 durable parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 96px;\"><span style=\"font-weight: 400;\">Aluminium<\/span><\/td>\n<\/tr>\n<tr style=\"height: 96px;\">\n<td style=\"width: 17.5258%; height: 96px;\"><span style=\"font-weight: 400;\">Spray painting and vapour polishing<\/span><\/td>\n<td style=\"width: 18.9433%; height: 96px;\"><span style=\"font-weight: 400;\">Addition (~0.012\u20130.25 mm); slight reduction (negligible)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 96px;\"><span style=\"font-weight: 400;\">Smooth, coloured; Glossy, smooth<\/span><\/td>\n<td style=\"width: 30.9278%; height: 96px;\"><span style=\"font-weight: 400;\">Combining surface enhancement\/protection and quality improvement for 3D printed parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 96px;\"><span style=\"font-weight: 400;\">Thermoplastic<\/span><\/td>\n<\/tr>\n<tr style=\"height: 72px;\">\n<td style=\"width: 17.5258%; height: 72px;\"><span style=\"font-weight: 400;\">Sand blasting and anodising<\/span><\/td>\n<td style=\"width: 18.9433%; height: 72px;\"><span style=\"font-weight: 400;\">Negligible reduction (~0.0025\u20130.025 mm)<\/span><\/td>\n<td style=\"width: 15.7216%; height: 72px;\"><span style=\"font-weight: 400;\">Matte or satin, grainy; Matte or glossy, coloured<\/span><\/td>\n<td style=\"width: 30.9278%; height: 72px;\"><span style=\"font-weight: 400;\">Surface preparation and protection for aluminium parts<\/span><\/td>\n<td style=\"width: 16.7526%; height: 72px;\"><span style=\"font-weight: 400;\">Aluminum<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-uk\/topic\/how-does-vapor-polishing-effect-3d-prints-tolerance\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/11\/community-icon-1.svg\" alt=\"\"><\/a><a href=\"https:\/\/xometry.pro\/en-uk\/topic\/how-does-vapor-polishing-effect-3d-prints-tolerance\/\" class=\"aside-link\">How does vapor polishing effect 3D prints&#8217; tolerance?<\/a>    <\/aside>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"regulations-and-standards-for-maintaining-dimensional-accuracy-during-postprocessing\"><strong>Regulations and Standards for Maintaining Dimensional Accuracy During Post-processing<\/strong><\/h2>\n\n\n<p>Here is a brief overview of standards related to dimensional accuracy maintenance during post-processing commonly used in Europe, the UK and Turkey:<\/p>\n\n\n<div class=\"custom-table-block \" id=\"table-id-856\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-856\" placeholder=\"Table search\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 10.4381%;\"><b>Standard<\/b><\/td>\n<td style=\"width: 29.6392%;\"><b>Usage<\/b><\/td>\n<td style=\"width: 27.1907%;\"><b>Objective<\/b><\/td>\n<td style=\"width: 32.6031%;\"><b>Example of Application<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 10.4381%;\"><a href=\"https:\/\/www.iso.org\/standard\/7748.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ISO 2768<\/span><\/a><\/td>\n<td style=\"width: 29.6392%;\"><span style=\"font-weight: 400;\">Establishes general tolerances for linear dimensions, angular dimensions, and geometrical tolerances in unassociated metal parts<\/span><\/td>\n<td style=\"width: 27.1907%;\"><span style=\"font-weight: 400;\">Ensures consistency in size throughout different manufacturing processes and post-production stages<\/span><\/td>\n<td style=\"width: 32.6031%;\"><span style=\"font-weight: 400;\">Indicating medium tolerances for a CNC-machined metal shaft with a 50 mm diameter as \u201cISO 2768-m\u201d on the drawing<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 10.4381%;\"><a href=\"https:\/\/www.iso.org\/standard\/66777.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ISO 1101<\/span><\/a><\/td>\n<td style=\"width: 29.6392%;\"><span style=\"font-weight: 400;\">Sets permissible limits for variations in part geometry, focusing on form and position tolerances<\/span><\/td>\n<td style=\"width: 27.1907%;\"><span style=\"font-weight: 400;\">Ensures components meet geometric standards despite dimensional changes during finishing operations<\/span><\/td>\n<td style=\"width: 32.6031%;\"><span style=\"font-weight: 400;\">Specifying perpendicularity: \u22a5 0.1 ISO 1101 for a hole to remain within a 0.1 mm tolerance zone relative to a given datum plane<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 10.4381%;\"><a href=\"https:\/\/www.gdandtbasics.com\/asme-y14-5-gdt-standard\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ASME Y14.5<\/span><\/a><\/td>\n<td style=\"width: 29.6392%;\"><span style=\"font-weight: 400;\">Describes how GD&amp;T symbols specify allowable variations in sizes and shapes of parts using controls such as position control<\/span><\/td>\n<td style=\"width: 27.1907%;\"><span style=\"font-weight: 400;\">Ensures uniformity and high accuracy during and after manufacturing<\/span><\/td>\n<td style=\"width: 32.6031%;\"><span style=\"font-weight: 400;\">Using positional tolerance symbol on the drawing: <\/span><span style=\"font-weight: 400;\">Position: \u24c5 0.2 | \u230010 | A B C*<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 10.4381%;\"><a href=\"https:\/\/www.astm.org\/d0618-21.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ASTM D618<\/span><\/a><\/td>\n<td style=\"width: 29.6392%;\"><span style=\"font-weight: 400;\">Describes the practice for conditioning plastics for testing purposes after molding to test for thermal or chemical smoothing effects<\/span><\/td>\n<td style=\"width: 27.1907%;\"><span style=\"font-weight: 400;\">Ensures dimensional accuracy by conditioning samples for equilibrium before further operations<\/span><\/td>\n<td style=\"width: 32.6031%;\"><span style=\"font-weight: 400;\">Conditioning plastic samples for 48 hours at 50\u00b0C, then 96 hours at 23\u00b0C with 50% relative humidity before chemical smoothing<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>*The center of the hole must fall within a zone of 0.2mm diameter about datums &#8216;A,&#8217; &#8216;B,&#8217; and &#8216;C&#8217; so that accurate assembly can be achieved during post-processing.<\/p>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.pro\/en-uk\/guides\/ebook-mastering-tolerances-for-machined-parts\/\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/07\/Fusion360_LoadingPart-Illustration-1.png\" alt=\"\"><\/a><a href=\"https:\/\/xometry.pro\/en-uk\/guides\/ebook-mastering-tolerances-for-machined-parts\/\" class=\"aside-link\">eBook: Mastering Tolerances for Machined Parts<\/a>    <\/aside>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"tools-and-technology-for-monitoring-and-controlling-dimensional-changes\"><strong>Tools and Technology for Monitoring and Controlling Dimensional Changes<\/strong><\/h2>\n\n\n<p>Monitoring\/controlling dimensional changes during post-processing requires accurate tools\/technologies. Some key solutions include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Coordinate Measuring Machines (CMMs):<\/strong> These machines use a probe to accurately measure the physical shapes of an object. They are useful for checking measurements as well as detecting any deviation from design specifications. They excel in precision, often achieving measurements within micrometers (0.001 mm), far surpassing the typical accuracy of digital calipers, which is around 0.01 mm.<\/li>\n\n\n\n<li><strong>Laser scanners:<\/strong> Laser scanners provide non-contact measurement. They generate high-resolution 3D models of parts that are then compared to CAD designs to ascertain any dimensional change.<\/li>\n\n\n\n<li><strong>Optical comparators:<\/strong> These devices project the profile of a part onto a screen and allow for visual comparison against pre-set standards. They are most useful in monitoring dimensional changes in small and intricate parts.<\/li>\n\n\n\n<li><strong>Digital calipers and micrometers:<\/strong> For fast, accurate measurements, digital calipers and micrometers provide excellent accuracy when it comes to measuring lengths or thicknesses, which is imperative for quality control.<\/li>\n\n\n\n<li><strong>Surface roughness testers:<\/strong> These determine surface finish quality by identifying changes that would affect dimensional accuracy resulting from practices like sanding or polishing through post-processing.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-1024x683.jpg\" alt=\"Engineer using a coordinate measuring machine (CMM) to inspect a 3D-printed part in a lab setting\" class=\"wp-image-41993\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-1024x683.jpg 1024w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-300x200.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-768x512.jpg 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-1536x1024.jpg 1536w, https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-scaled.jpg\" data-fancybox=\"gallery-42180\" data-caption=\"Engineer inspecting a part using a coordinate measuring machine (CMM) for dimensional accuracy\" aria-label=\"Open full image\"2><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2024\/07\/engineer-using-cmm-measuring-3d-printed-part-close-up-scaled.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Engineer inspecting a part using a coordinate measuring machine (CMM) for dimensional accuracy<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-reflect-tolerances-on-technical-drawings\"><strong>How to Reflect Tolerances on Technical Drawings<\/strong><\/h2>\n\n\n<ul class=\"wp-block-list\">\n<li>To reflect the finishing processes, such as anodising, on technical drawings, it is necessary to indicate post-treatment tolerances for any specific customer requirement (e.g. hard anodising 50\u00b5m).&nbsp;<\/li>\n\n\n\n<li>Clearly specify on the drawing that tolerances on the drawing are <strong>post-treatment<\/strong>.<\/li>\n\n\n\n<li>For thin treatments (&lt;10 \u00b5m), final tolerances can often be assured. For any treatments thicker than 10 \u00b5m, it is recommended to mask certain surfaces to prevent unpredictable dimensional changes post-treatment (e.g. mask threaded holes to ensure they remain within tolerance and functional after a thick anodising layer is applied).<\/li>\n\n\n\n<li>Add any surface finish symbols (roughness) and specific tolerances (linear or geometric) that will ensure the part meets its functional requirements.<\/li>\n<\/ul>\n\n\n    <aside class=\"article-content-aside\">\r\n        <a href=\"https:\/\/xometry.uk\/\" target=\"_blank\" class=\"aside-image sidebar__aside-image\"><img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/11\/manual_quote_ready.svg\" alt=\"\"><\/a><a href=\"https:\/\/xometry.uk\/\" target=\"_blank\" class=\"aside-link\">Source Parts with Post-processing at Xometry<\/a>    <\/aside>\r\n    ","protected":false},"author":50,"featured_media":41985,"comment_status":"open","ping_status":"closed","template":"","categories":[],"c-tag-articles":[],"global-tag":[700,592],"class_list":["post-42180","articles","type-articles","status-publish","has-post-thumbnail","hentry","global-tag-design-uk","global-tag-post-processing-uk"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Impact of Post-Processing on Dimensional Accuracy of Parts | Xometry Pro<\/title>\n<meta name=\"description\" content=\"Discover how post-processing impacts dimensional accuracy in manufacturing, affecting the final dimensions and functionality of parts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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