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

# What is the difference between offset body and thicken body?

## Question:

What is the difference between the **Offset Body** block and the **Thicken Body** block?

## Answer:

When working with parts in nTop, sometimes you may need to increase or decrease the size of the part. There are two main options for doing this: **Thicken Body** and **Offset Body**.

![ThickenBody.png](https://files.learn.ntop.com/help-articles/implicit-modeling/360072936413.png)

*Thicken Body: Create a thickened hollow Implicit Body using an Implicit boundary as a mid-surface.*

The **Thicken Body** block thickens the part in both directions, using the boundary of the body as the centerline of the thickness. **Thicken Body** is best to use for 1D or 2D parts, such as CAD surfaces or graph lattices. When thickening a lattice, the thickness value can be thought of as a diameter value.

![OffsetBody.png](https://files.learn.ntop.com/help-articles/implicit-modeling/360071743974.png)

*Offset Body: Offset the surface boundary of an Implicit Body inward or outward.*

**Offset Body** works best for objects that already have a volume. It adjusts the surface boundary of the part. A positive value increases the surface boundary, while a negative value decreases it. When offsetting a lattice, the distance value can be thought of as a radius value.

![thickness\_offset.png](https://files.learn.ntop.com/help-articles/implicit-modeling/360072936333.png)

## Keywords:

*blocks lattice volume body offset thicken what is the difference between thick hollow*