Is there a better way to allocate material groups for mesh sections (to cancel pairing and later structures) than using Group buttons? The reason I asked was that I was finding the group button leaving the holes in the net (from which the part that exploded touched it) and then I had to go back and fill it. [google.com] Maybe something similar to ZBrush's Polygroup / Polypaint, which works very elegantly to break a component model without destroying the grid. Tks!