---
title: "Options"
url: "https://help.maxon.net/c4d/en-us/Content/html/TOOLEXTRUDEINNER-MDATA_MAINGROUP.html"
section_path: "Mesh Menu > Inset > Options"
element_id: "TOOLEXTRUDEINNER"
group_id: "MDATA_MAINGROUP"
description: "If Preserve Groups is enabled, polygons not exceeding this angle to each other will stay together during the Inset. If the polygons exceed this angle …"
---

## Options

### Maximum Angle

Parameter ID: `MDATA_EXTRUDEINNER_ANGLE` · Range: [0..180°]

If **Preserve Groups** is enabled, polygons not exceeding this angle to each other will stay together during the Inset. If the polygons exceed this angle, they will be broken apart.

### Offset

Parameter ID: `MDATA_EXTRUDEINNER_OFFSET` · Range: [-∞..+∞m]

Defines the width of the inner extrusion (that is, the distance between an edge of the original polygons and the corresponding edge of the inner extrusion).

### Offset Variation

Parameter ID: `MDATA_EXTRUDEINNER_VARIANCE` · Range: [0..+∞%]

Gives a percentage value for the variation of the width of Inset. This option is only available if Preserve Groups is disabled.

0% - No deviation from the selected Offset value.

60% - All selected polygons are inward extruded between 40% and 100% of the Offset value.

100% - All selected polygons are inward extruded between 0% and 100% of the Offset value.

180% - All selected polygons are extruded between -80% (outward) and 100% (inward) of the Offset value.

![Image: 003683.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/003683.jpg)\
Var 0% and 60%.

### Subdivision

Parameter ID: `MDATA_EXTRUDEINNER_SUBDIVISION` · Range: [0..2147483647]

Here you can define the number of subdivisions for the Inset.

![Image: 003685.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/003685.jpg)\
Subdivision set to 0 and 2.

### Create N-gons

Parameter ID: `MDATA_EXTRUDEINNER_CREATENGONS`

Enable this option if you have defined subdivisions but want to avoid the additional edges between the original polygons and the Inset that this would normally cause.

### Preserve Groups

Parameter ID: `MDATA_EXTRUDEINNER_PRESERVEGROUPS`

If this option is enabled, the connected polygons will stay together during extrusion, provided they do not exceed the Maximum Angle relative to each other.

![Image: 003687.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/003687.jpg)\
Preserve Groups enabled and disabled.

> **Tip:** Proceed with caution when inner extruding several connected polygons that you want to keep as a group. In the following example, only the outer edges of the selection are moved inwards. The edges of the inner surfaces of the selection are not affected.

![Image: 003689.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/003689.jpg)\
Before and after inserting - only the outside edges will be moved.

This can lead to problems when starting with a certain Offset value, since the outer edges can possibly overlap with the internal ones. The problem occurs when starting with an Offset value that is set too high.

![Image: 003691.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/003691.jpg)\
Offset set too high.

To remedy, set Offset to a lower value.