# Vertex Offset

> How to use Vertex Offset to inflate or deflate meshes in Asset Transformer Studio

The [Vertex Offset](/asset-transformer-studio/2026.5.0/api/python/algo_functions.md#vertexoffset) function allows you to move vertices by offsetting their position along their normal, positively or negatively.

In some data preparation use cases, it can be necessary to inflate or deflate a mesh — displacing its vertices positively or negatively — because it is easier than actually moving the parts.

For example, when 2 parts are overlapping (creating Z-fighting):

![Vertex Offset example](/api/media?file=/asset-transformer-studio/2026.5.0/media/ALGO_OffsetMeshes.gif)

## How to

Access the [Vertex Offset](/asset-transformer-studio/2026.5.0/api/python/algo_functions.md#vertexoffset) function from the [Mesh](./_index.md) menu.

Use the **Inflate** and **Deflate** presets available to offset vertices by a value of +0.1mm or -0.1mm.

> **Note:**
>
> This is the core function used in the [Remove Z-fighting](./remove-z-fighting.md) function.