> ## Documentation Index
> Fetch the complete documentation index at: https://docs.3dpreppro.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Wall Thickness

> Set the minimum wall thickness for reliable printing

<Frame>
  <img src="https://mintcdn.com/alphaworks/4GKl9wpYAwI5IRWf/images/editor/tools/thickness.png?fit=max&auto=format&n=4GKl9wpYAwI5IRWf&q=85&s=a919afde59d7bbc215c4e50b4810ce2b" alt="Wall Thickness tool settings panel" width="702" height="550" data-path="images/editor/tools/thickness.png" />
</Frame>

Wall Thickness sets the minimum thickness any wall in your model can have. During repair, walls thinner than this value are automatically thickened.

## When to use this

When your model has delicate features, thin edges, or fine details that might break during printing or post-processing.

## Settings

### Thickness (0–10 mm)

The minimum wall thickness. **Default: 1.0 mm.**

**Recommended values by printer type:**

| Printer             | Minimum thickness |
| ------------------- | ----------------- |
| FDM                 | 1.0–1.5 mm        |
| SLA / Resin         | 0.5–1.0 mm        |
| Full-color (Mimaki) | 0.7–1.0 mm        |
| SLS                 | 0.7–1.0 mm        |

## Step by step

<Steps>
  <Step title="Select the Thickness tool">
    Click **Wall Thickness** in the toolbar.
  </Step>

  <Step title="Set your minimum thickness">
    Adjust the value based on your printer's requirements.
  </Step>

  <Step title="Run a repair">
    This setting takes effect during the next repair.
  </Step>
</Steps>

<Warning>
  Setting thickness below **0.5 mm** may result in walls that crumble or break during printing or post-processing.
</Warning>