Hello Steven,

I hope you’re doing well. I understand the nuances involved in selecting the right file type for your projects. It’s great that you’re exploring beyond STL files for creating multi-colored small sculptures.

• STL files are standard for 3D printing but lack the capability to store color information.
• For multi-colored prints, you need file formats that can carry color and material data along with geometry.

Key Insights:

• VRML (.wrl): An older format, VRML (Virtual Reality Modeling Language), supports color and texture. However, it’s less commonly used today.
• 3MF (.3mf): A modern alternative that stores detailed information including colors, textures, and print attributes. It’s becoming increasingly popular due to its comprehensive data storage capabilities.

1. 3MF (.3mf) Files:

   • Supports full color and texture, along with other print-relevant data.
   • Widely supported by modern 3D printing software and services.
   • Example: Perfect for intricate toys with multiple colors and materials.

2. VRML (.wrl) Files:

   • Can include color and texture but might not be supported by all current 3D printers.
   • Useful for projects where compatibility with older systems is necessary.
   • Example: Suitable for simpler projects that require basic color textures.

In conclusion, I’d recommend starting with 3MF for its advanced capabilities and wider support. However, VRML can be a viable option depending on your specific needs and equipment. If you have any further questions or need clarification, please don’t hesitate to ask. I’m here to help make your 3D printing journey as smooth as possible.

Best regards, Attila

We use mostly 3MF, PLY, OBJ for our Mimaki 3DUJ-2207. They support a wide range of colors and textures.

I’m glad you found the initial information useful. To convert your files to 3MF from STL, the process will generally involve the following steps, depending on the specific software you are using:

Open your STL file in a 3D modeling software that supports 3MF, such as Microsoft 3D Builder, Autodesk Fusion 360, or similar.

Check your model for any errors that might affect the printing process. These can be non-manifold errors or issues with normals, which some software can repair automatically.

Add color information to your model, if your software allows. This can involve applying color to individual faces or vertices, or wrapping the model with a texture.

Export your model as a 3MF file. Usually, this is as simple as selecting ‘Save As’ or ‘Export’ and choosing 3MF as the file type.

Validate the 3MF file to ensure it contains all the necessary color information and that there are no errors which might prevent printing.

Each software will have its own nuances for this process, so I recommend referring to specific tutorials or help sections for the software you choose.