Lok3D

Thread clearance test for 3D printers

Generate a plate with threaded holes of different clearances and a printed bolt to test them. Find the right clearance for M6 to M12 threads. Free.

  • Free
  • No sign-up
  • STL and 3MF
  • Millimeter precise
  • Runs in the browser
Example thread test made with Lok3D

The model opens ready in the editor, in your browser. Then you can tweak anything and download STL or 3MF.

About the thread test generator

Printed threads work very well with the right clearance. Too little binds; too much leaves the bolt loose. This test prints a plate with threaded holes, each with a different clearance, and a bolt to try them.

After printing, screw the bolt into each hole: the one that turns smoothly without wobble gives the value to use for threads in the editor and in the screw-top jar.

What you can adjust

Sizes

M6, M8, M10 or M12 (ISO coarse pitch).

Clearance range

0 to 1 mm.

Engraved values

The clearance written next to each hole.

Bolt included

Printed at nominal size.

Ideas for use

How it works

  1. Choose the thread size and clearances.
  2. Print the plate and bolt as they are.
  3. Screw the bolt into each hole and use the best clearance.

How to print

Material
The same as the final parts
Layer height
0.12 to 0.16 mm
Walls
3 perimeters
Supports
Not needed

FAQ

Which clearance usually works?

Between 0.2 and 0.4 mm for PLA with a 0.4 mm nozzle.

Does it work for metal bolts?

Yes: screw a metal bolt of the same size into the holes to find its ideal clearance.

Is it free?

Yes. The maker and the editor are free and run in your browser. Without an account, the project is kept for 48 hours; with a free account, it is kept in your account.

Which format do I download?

3MF (recommended: keeps colors and opens directly in Bambu Studio, OrcaSlicer and Creality Print), STL or OBJ, always in millimeters.

Create your thread test now ↑

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