How to 3D PRINT Parts that FIT Together - Maker Software
Modeling things for 3d printing can be very satisfying. If you don't put the proper clearance, however, things will not fit together in the end, as 3d printing is not a perfect process. In this video, I show you some tips and tricks on how you can make your 3d prints actually fit together in the real world.
If you're looking for some good general-purpose advice on tolerances for 3d printed mechanical parts, here are the design rules that Voron design uses with great success:
-no overhangs over 45 degrees
-0.4mm chamfer on surfaces that touch the print bed (and no fillets on the build surface--breaks the 45 degree overhang rule)
-loose joints are generally oversized by 0.3-0.4mm diameter for a loose fit or 0.1mm for a press fit. 3.4mm for M3 hardware, 5.4mm for M5 hardware
-Countersunk holes "overhanging" the print surface should have a chamfer on them or another method like that to prevent issues
-Think about minimum perimeters/shells--try to avoid really thin features
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