Halo 2 Channel and Shank
*Be sure you have the latest version of 3DESIGN V9.1+. There was a bug in earlier versions that prevented the curve history from updating correctly.
This chart explains the different number of cuves involved in regular stone creation, right click the image to save to your computer:
Extract UV Curves, Modify Curves, Boolean Operation,
Claws, Sweeping Wizard, Variable Channel, Stone, Jeweling, Prong, Channel Prongs