Shell

Shell builds a new piece over the selected faces, raised off them by Thick (select the top of a head and Shell it to make hair). The shell follows curves, and its edge closes back down to the surface. Shell is the third tool under Surface in the Build tab.

Select faces, set Thick from 1 to 4 blocks, then tap Shell. The selection clears and the shell becomes the active piece. The shell takes the active color; when that color matches the faces under it, the shell gets a different color so it shows. With Mirror on, the matching faces on the other side get a shell too.

The shell piece

The shell is its own piece:

• Move its rings (pull the bottom ring down for a fringe).
• Fill or paint it on its own.
• Attach it so it moves with the part it covers.

Shell takes faces on one piece at a time. To change the thickness later, move the shell’s rings, or tap Undo and Shell again with a different Thick.