Lids too tight, pegs too loose? Generate a labelled hole plate and matching pegs at a range of clearances (0.1, 0.2, 0.3 mm…), print it once, and you know the exact gap to design with on your printer and filament.

Who it's for: Anyone designing parts that must fit together: lids, pegs, snap fits, print-in-place and replacement parts.

Key features

• Round or square fits
• Your own clearance range: start, step and 2-12 fits
• Clearance engraved above every hole
• Peg size, plate thickness, peg height and spacing in mm
• Manifold, print-ready meshes

How to use

1. Press N in the 3D Viewport and open the Fit Test tab.
2. Choose round or square and the peg size you design with.
3. Set the smallest clearance, the step and how many fits you want. The panel lists the clearances it will make.
4. Click Make fit test, export the hole plate and the peg bar, and print both with your normal settings.
5. Try each peg: the label on the first hole that fits the way you want is the clearance to design with.

Compatibility: Blender 4.2 or newer. Tested on Blender 4.2 LTS and 5.1. Pure Python, nothing extra to install.

Good to know: Clearance is the total gap (half per side). Results are for the printer, nozzle and filament you test with; reprint when you change any of them.

Support: Questions or a model that doesn't work? Message us through Superhive (Contact the creator) with what happened, and the model if you can, and we'll help. Free updates for version 1.x.