Hi all, working on a sheet metal design and trying to form a C-channel in 2mm stainless (304). The depth is 50mm, and I’m wondering if I’m asking for trouble with bending—springback, cracking, or just general forming headaches. Anyone dealt with something similar? Would tweaking the bend reliefs or flange lengths help keep things in shape, or is there a better way to approach this?

Hi! I’m prototyping a watch case and considering metal laser sintering (DMLS or SLM) due to cost constraints—CNC machining is out of budget. My main concern is whether an as-printed sintered metal part will be watertight enough to pass standard watertightness tests, or if post-processing (like infiltration, sealing, or polishing) is necessary to ensure no micro-porosities. Has anyone tested this in real-world applications, and what finishing steps would be required to achieve full waterproofing?

Help, I need to reduce vibrations transmitted to the enclosure and improve airflow efficiency for 3D-printed spacers for mounting cooling fans on an industrial control cabinet. These spacers need to provide some damping without compromising structural integrity. Would a flexible material like TPU be the best choice, or would a rigid polymer like PETG or ABS with specific print settings (infill density, layer height, wall thickness) offer better vibration isolation?

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Hello everyone, I want to make a disk of 203 mm in diameter, 25 mm in height with a concave curvature of 3.22 mm.Will this precision be respected knowing that I am not a professional but an individual?

hello, I’m designing a part with an FDM 3D printed hole to hold a 6mm wooden dowel, but I’m unsure about the actual fit due to print tolerances and material shrinkage. The hole is modeled at 6mm in CAD, but I know FDM printers often produce slightly smaller or irregular holes depending on factors like layer adhesion and filament type. For those who have tested similar setups, should I oversize the hole slightly to ensure a proper fit? If so, what diameter would you recommend to achieve either a snug slip fit or a light press fit without excessive post-processing?