> Posted for "William" <wschertz@ispwest.com>:
>
> No question that the 'pour foam' or great stuff sands easier, but it does
> NOT dissolve in acetone like the pink or blue styrofoam.  If you use the
> pink/blue material, fill it after getting it to rough shape and then sand
> the filler. Don't use bondo, it will attack the pink material.
>
> Bill Schertz


Don't forget good old modeling clay either.  This is my favorite male mold
material for small bumps and intersection fairings.  Spray with PVA or cover
with electrical tape for release.

Tracy Crook