Tutorial: Unigraphics NX mold design : Section 6.2 Mold Parting Tools Patch Surface

2 Answers

Surface Need to Be Patched When There is Mating of Core And Cavity
Answered with a tutorial: https://grabcad.com/tutorials/tutorial-unigraphics-nx-mold-design-section-6-2-mold-parting-tools-patch-surface

Sample file Used for This Tutorial is Uploaded to library NX Mold Design