> ## 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.

# Conversion to CAD with Quadrangulate Mesh

To convert an Implicit Body or Mesh to CAD, we will use the **CAD Body from Quad Mesh** Block. This block is capable of exporting implicit or mesh parts to STEP or Parasolid formats. If you are working with an older version of nTop, this block is called **CAD Body from Mesh**.

<Frame>
  <img src="https://files.learn.ntop.com/lessons/conversion-to-cad-with-quadrangulate-mesh/102_5_CBQM.png" />
</Frame>

## CAD Body from Quad Mesh

Before converting, we will use the **Quadrangulate Mesh** Block to generate a Quad mesh as in the workflow shown below.

<Frame>
  <img src="https://files.learn.ntop.com/lessons/conversion-to-cad-with-quadrangulate-mesh/102_5_CBQM2.jpg" />
</Frame>

## Quadrangulate Mesh

The **Quadrangulate Mesh** block creates a mesh with the number of Quads indicated in the target count. For finer details, increase the target count. The quad mesh allows for easier and faster conversion to a CAD Body format. Note that meshes may need further refinement before being converted into a Quad Mesh, and this should not be used with lattices or TPMS structures.

<Frame>
  <img src="https://files.learn.ntop.com/lessons/conversion-to-cad-with-quadrangulate-mesh/102_5_Quadmesh.gif" />
</Frame>

<Note>
  **Note**: This block works best with simpler structures and some TPMS lattices. We do not recommend it for use with a complex lattice structure.
  For small to medium-sized lattices that this method cannot support, try the **CAD Body from Implicit Body** block discussed in the Working with CAD Bodies Lesson in [101: nTop Essentials](/courses/101-ntop-essentials/).
</Note>