> For the complete documentation index, see [llms.txt](https://tk233.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tk233.gitbook.io/notes/3d-modeling/3d-print-tolerancing.md).

# 3D Print Tolerancing

The tolerancing of the part is controlled by the `TOLERANCE_OFFSET` variable in the CAD model.

<table><thead><tr><th>Desired Fit</th><th>Clearance Gap (mm)</th><th width="135">Multiplier</th></tr></thead><tbody><tr><td>Press Fit</td><td>Line to line (0)</td><td>0 x</td></tr><tr><td>Tight Fit</td><td>0.1</td><td>1 x</td></tr><tr><td>Normal Fit</td><td>0.2</td><td>2 x</td></tr><tr><td>Loss Fit</td><td>0.3</td><td>3 x</td></tr></tbody></table>

### Press Fit

### Tight Fit

This is commonly used in bearing interfaces

### Normal Fit

## Reference

{% embed url="<https://forum.freecad.org/viewtopic.php?t=28602>" %}

{% embed url="<https://all3dp.com/2/3d-printing-tolerances-test-fdm/>" %}

{% embed url="<https://3dchimera.com/blogs/connecting-the-dots/3d-printing-tolerances-fits>" %}