---
title: Solidify
order: 6
---

Hollow a shape into a shell of given thickness, like Blender's Solidify modifier, but the result is a single watertight SDF you can keep stacking on.

![Solidify settings](../assets/modifier-settings-solidify.webp)

## Parameters

- **Thickness**: shell wall thickness (`0.001–10.0`, soft max `1.0`, default `0.1`)

You can chain Solidify freely with booleans, mirrors, arrays, and twists. The shell stays a single watertight surface. Dragging the thickness from the pie updates the proxy mesh too, so selection outlines and snapping follow the shell.

## See also

- [Boolean](boolean.md): hollow the result of a boolean by adding Solidify after
- [Operations: Convert](../operations/convert.md): convert the hollow shell to mesh