Here's how to test your CAD hole diameters VS printed once. Fit your screw in the hole that fits and now you know diameter to enter in your CAD software.
Let's say you have a bunch of 3mm screws… After using my screw tolerance test you see that you need an actual diameter of 3.3mm.
Now you enter 3.3mm for all your hole diameters in your CAD software.
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