David,
Using your example: picture the lower jaw as a hemishpere with 13 wedges, with
the hemi-sphere's left lip being the lower lip of the mouth. The small
subgroup should be the first cross-section (lip wedge) at the left. The large
subgroup should be all the cross-sections starting from the lip-wedge (include
the small subgroup in your selection), down to wherever you like, say the
seventh wedge.
-GreG
>>
So you're saying I shouldn't just mess with the faces inside the mouth, but
with the entire jaw, right?
<<
Well, if you want the jaw to open and close, yes. <g> Experiment with that
"hemisphere" lower-jaw to see what your small & large subgroups should be.
Once you get that down, you'll be able to use the experience when boning the
jaw.
-GreG