We have a small handful of functions that reside in the top toolbar for the Retopo tab
![](https://3dcoat.com/documentation/wp-content/uploads/2024/06/image-24.png)
If the mesh has multiple UVs, you can switch them in that drop-down list.
Move Select: Move selected faces to another UV set.
AutoSnap: Snap newly created points to the surface automatically.
![](https://3dcoat.com/documentation/wp-content/uploads/2024/06/autosnap.png)
- Snap to Closest Along Normal: Snap to the closest point on the surface along the normal of the retopo mesh.
- Snap to Outer Face: Snap to the outermost surface within the designated threshold.
- Snap to Nearest: Snap to the nearest point on the surface.
![](https://3dcoat.com/documentation/wp-content/uploads/2024/06/image-25.png)
Additional Extrusion: The additional extrusion of the mesh. This value will be used when you transfer the mesh into the scene. It could be useful for making cloth.
Z-bias: This z-bias value will be used to improve the visual appearance of the mesh. Adjust the z-bias to get a better look at the retopologized mesh preview.
Retopology mesh opacity: The current group gets this opacity; other groups are getting 50% of this opacity, and other UV sets are getting 25%.
Colors: Edit Retopology Mesh and UV island Color.
![1572284850_bandicam2021-04-1412-00-45-292_Changecolor.thumb.jpg.b30e77330ef01650aa52f56269903720.jpg](https://3dcoat.com/forum/uploads/monthly_2021_04/1572284850_bandicam2021-04-1412-00-45-292_Changecolor.thumb.jpg.b30e77330ef01650aa52f56269903720.jpg)
When you select an Retopology/UV islands colors, each color cell corresponds to a polygroup.
![](https://3dcoat.com/documentation/wp-content/uploads/2022/09/uvcolors-1-1024x720.png)
Radius: Change the Brush Radius.
Invert Mirror: Enable this option if you want to invert the direction of symmetry mirroring.
Mirror Snapping: This value determines the degree of snapping of points close to the mirror.
Various view modes for the retopo mesh: With no checker, with a simple checker, with a complex checker, and Custom Texture.
Separate options for wireframe, seams, sharp edges, colored islands preview, and smooth mesh view.
![](https://3dcoat.com/documentation/wp-content/uploads/2022/10/checker-sel-1.jpeg)
![](https://3dcoat.com/documentation/wp-content/uploads/2022/10/retopodisplaymodes1.jpeg)
![](https://3dcoat.com/documentation/wp-content/uploads/2022/10/retopodisplaymodes2.jpeg)
It is very useful as it shows the distortions of the texture in different areas of the mesh.
![](https://3dcoat.com/documentation/wp-content/uploads/2022/10/235px-simplechecker.jpeg)
New 2D Primitives
Added new tool for creating 2D primitives for Modeling and Retopo rooms:
![](https://3dcoat.com/documentation/wp-content/uploads/2022/10/2dprimitives.jpeg)
Video Tutorials
Unify Multiple UV Sets into One: If you have a scene in 3Dcoat with multiple uvmaps (UVsets), you can consolidate them into one.