Face by Inverting Loops
Mold & Die Design
Tool Bar
Use this command to create a face by inverting
the trim loops of a face. The
selected face remains intact and a new face is created. This
allows you to create a face where there was once a trimmed hole in a face.
The new
face will match the mathematical characteristics of the selected face.
This command can be used to create parting faces in mold
design if the part model has rings in its topology (consider buttons in
a cellular phone) and there are trimmed faces that can be directly converted
to parting faces by inverting their trim loops.
Face - Select a face whose trim loops you want to invert.
Edges - Select the edges on the loops to invert or middle-click to select all loops.
Bounds
- Set the base parameter boundaries. Select
from the following:
Untrimmed Surface - Use the
untrimmed base surface to define the extents of the new face.
Outmost Loop - Use the outer
most loop of the trimmed face to define the extents of the new face.

Original face.
Original face after being trimmed on three sides.
Face by inverting loops with the Bounds set to Untrimmed Surface. The new face is sized to the extents of the untrimmed surface of the original face.
Face by inverting loops with the Bounds set to Outmost Loop. The new face is sized to the extents of the outer loop of the original face. The portion of the new face created depends on the edges selected.
Same D above but with different edges selected.