Inset

 From:  lyes (BLYESS)
3833.9 In reply to 3833.7 
Hi Michael if you shell sphere you get 2 spheres one inside the other and that is a Groop!!!!!!!!!!! when you select you select the 2 sphere
and you can separate them with the Separate Command!

EDITED: 29 Oct 2010 by BLYESS