This feature also works very well with the two stage carve feature. Carving this snail with a 1/16" bit takes a long time, but using a 1/4" bit to remove the interior and then using a 1/16" bit on the rest makes it take way less time.
Only 1/16" bit (about 29min):
Compare with 1/4" + 1/16" bits (6min roughing + 8min detail):
