Quote:
Originally Posted by JamesCH95
If you use 5mm hex stuff a lot it may be worth investing in a 5mm hex broach (McMaster has them). Some teams have ground their own broaches from old machine tooling for a lower-cost option. (Not that I have anything against filing, if you making just a few it's a great option)
To directly answer your question, I recall seeing a team last year with 3D-printed wheel hubs, so printed parts can be used in high-stress situations. Your success will depend on the printer, materials, and printing pattern, not simply that its 3D printed. You can also do fun things like soaking the part in epoxy to make it ~100% dense and thus stronger.
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Yeah, as a team who used (or at least attempted to use) 3d printed wheel hubs I'd recommend steering clear of 3d printing for high stress applications. It went pretty terribly for us, and we had to switch out everything last minute. The type of hubs we used were just the VEX Versa hubs. I think the material was ABS but I can't be sure.