# Mesh.extrude_path demo

sweep a profile along a 3D centerline.

```{raw} html
<a class="example-run-button" href="../demos/features_3d_extrude_path.html">▶ Run in browser</a>

```

**Tags:** `3d`

Demonstrates:
  - Mesh.extrude_path() generating a tube mesh from a polyline + circle profile
  - A curved track with a custom square profile (rail)
  - Default 8-sided circle profile and ad-hoc cross-section override

Controls:
    Escape  - Quit

Run: uv run python examples/features/3d/extrude_path.py

## Source

```{literalinclude} ../../examples/features/3d/extrude_path.py
:language: python
:linenos:
```