---
title: "Non-Manifold"
url: "https://help.maxon.net/c4d/en-us/Content/html/NET_MAXON_NEUTRON_ASSET_GEO_NONMANIFOLD.html"
section_path: "The Node Editor > The individual Assets > Geo Selection > Non-Manifold"
element_id: "NET_MAXON_NEUTRON_ASSET_GEONONMANIFOLD"
description: "This page describes the Non-Manifold node of the Scene Nodes system in Cinema 4D. It selects polygons and edges shared by more than two faces — finding …"
---

# Non-Manifold

> **Note:** **What is it about?**
>
> This page describes the **Non-Manifold node** of the Scene Nodes system in **Cinema 4D**. It selects polygons and edges shared by more than two faces — finding invalid geometry that the Remove Non-Manifold node can then clean up.

This function allows you to select the polygons and their edges that form an invalid geometry. This is the case when an edge of more than two polygons is used. Such areas can be resolved e.g., via the *Remove Non-Manifold* Node.