Knife Project

Mode

Edit Mode

Menu

Mesh ‣ Knife Project

This works by using the outlines of other selected objects in Edit Mode to cut into the mesh along the view axis, resulting geometry inside the cutters outline will be selected.

Outlines can be wire or boundary edges.

To use Knife Project, first while in Object Mode, select the “cutting object” then add to that selection with Shift-LMB the “object to be cut”. Now, enter Edit Mode and press Knife Project (found in the Toolbar).

See also