Remove Boundary function
Use Remove Boundary, located on the Surfaces tab, to fill holes in a trimmed surface. You can fill internal holes (those that lie completely within the outer boundary of the surface) and external holes (those that lie along the outer boundary of the surface). For each hole that you select to fill, Mastercam closes the hole by removing the trimmed boundary. If the trimmed surface contains only one hole, Mastercam closes it by removing the trimmed surface and replacing it with the untrimmed base surface.
