---
title: "Trimmed Surface"
url: "https://help.maxon.net/c4d/en-us/Content/html/OTRIMMEDSURFACE.html"
section_path: "Configuration > Preferences > Import/Export > DWG Import > Object Settings for Curves and Surfaces > Trimmed Surface"
element_id: "OTRIMMEDSURFACE"
command_id: "1015546"
description: "This page covers the Trimmed Surface object in Cinema 4D. It represents the spline-bounded surfaces of imported IGES CAD files — keeping trimmed NURBS …"
---

# Trimmed Surface

> **Note:** **What is it about?**
>
> This page covers the **Trimmed Surface object** in **Cinema 4D**. It represents the spline-bounded surfaces of imported IGES CAD files — keeping trimmed NURBS patches editable as distinct objects in the Object Manager.

IGES-supported files are comprised of spline curves and spline surfaces. These objects are the foundation for the trimmed surfaces. Each object can be seen in the **Object Manager**.