>Do you use a Dremel (or other rotary tool) in your sculpting?
Yes.
>If so, how do you use it?
Bulk putty removal and some kinds of fine grinding and smoothing.
>Do you use a flexi-shaft?
No, but I want one (with a foot-operated power supply ideally).
>Which bits, burs, etc. do you find most useful?
Cutting heads, slitting discs and grinding stones for cruder work. Diamond burrs for finer grinding. Silicon-rubber bits for finer abrading; the finest white type for some subtle shaping and final smoothing prior to buffing if I want a polished surface.
Einion