Splitting a Surface by Another Surface

  1. Select Intersect > Combine .
  2. Click the surface you want to cut.
  3. Click the surface you want to cut the surface with.You can Ctrl+click multiple surfaces that together completely intersect the target surface to fully cut the surface. You can box-select surfaces that only partially intersect the target surface to partially cut the surface.
  4. Mouse over the surface to see the regions created by the cut.
  5. Click the region you want to delete.