I'm trying to do retopology with the Poly Build tool, but it keeps on wanting to select faces, edges and vertices from the backside.

I don't have this problem with the select tool, only the Poly Build tool. Does anyone know a way to fix this?

Poly Build vertex on other side

  • $\begingroup$ There are some great add-ons for retopology. Many rave about Retopoflow. $\endgroup$ Commented Jan 24, 2022 at 17:03
  • $\begingroup$ Are you in x-ray mode? In the upper right of the 3D Viewport there's an icon that shows a rectangle behind a rectangle. If that's selected you are. Deselect it and see if it helps. $\endgroup$ Commented Jan 24, 2022 at 17:25

1 Answer 1


This is a known design flaw discussed here. This problem would be fixed with the Retopology Overlay that is being worked on. Unfortunately, it doesn't seem to be getting much attention despite people bumping the thread.

A current workaround would be selecting all front faces, Ctrl+I to invert the selection, then H to hide. Doing this every time you move the viewport camera.


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