Bolt size tester
thingiverse
With this tool I can quickly test a bolt for the diameter and guarantee its going to fit after 3D printing. The vertical embossed lettering ( which in my photo I painted) is the diameter ( mm) of each center hole and the horizontal number is the diameter (mm) of the inset... to help if your wanting to recess the head. 1st 5 holes have the inset set for 3mm deep. The rest are 5 mm deep. I skipped a few larger numbers I don't use to cut down on the length. Hope this helps you to not waste time and plastic!!! This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/cbEzBU7jpIr
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