---
title: "Cut Mesh"
slug: "cyclone-3dr-meshcutc"
updated: 2026-10-20T10:01:41Z
published: 2026-10-20T10:01:41Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-meshcutc"
---

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

# Cut Mesh

![CmdMeshCut.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/CmdMeshCut.svg)

This command splits a mesh according to one or several polylines or a set of contours.

> [!TIP]
> ### Requirements
> 
> Select a mesh and one or more polylines, or a set of polylines, before launching the command.

1. If you have open polylines, optionally check **Close polylines**.
2. If **Project polylines** is checked, the polylines will be projected on the mesh (shortest distance).

The **Cut Mesh** command splits a mesh into separate parts using one or more polylines that define the cutting contours.

When a cutting contour crosses existing triangles, the triangles are subdivided to create new edges and vertices along the contour.

Unlike simply deleting triangles, **Cut Mesh** allows you to define the separation boundary more precisely, independently of the existing triangle edges; useful for extracting a specific area, cutting out a complex mesh, creating precise boundaries, preparing data for further processing, etc.

> [!WARNING]
> ### Note
> 
> - Cutting a mesh with polyline(s) may impact its geometry and topology:
> - increase in the number of triangles, as intersections may require additional vertices
> - modification of the triangles along the cutting path
> - creation of small disconnected mesh objects
> - loss or change of image associations on a textured mesh