Clean Up Invalid Geometry

After merging faces and welding vertices, you may need to auto-correct invalid geometry by detecting and collapsing microscopic edges and faces.

1. Press A, S, or D to open the Edit PolyNURBS tool panel.
2. Right-click in the edit PolyNURBS mode and select Clean Up .
   Note: If no invalid geometry is detected, no changes will occur.
3. Right-click and mouse through the check mark to exit, or double-right-click.