Fit & Tolerance Test Generator
Which Blender versions does it support?
Blender 4.2 or newer. It is tested on 4.2 LTS and 5.1.
Is the clearance per side?
No, it is the total gap: a 0.20 hole is 0.20 mm wider than the peg, so 0.10 mm on each side.
Do I need a new test for each material?
It is worth it. PLA, PETG and resin shrink and flow differently, so the right clearance can change.