I got some sculpty the other day and am using it to make a master so that I can form metal parts over it (an idea I got from FSM issue somthing-or-other). My question is should it be rock soild after baking? I swear I followed the directions but, it seems a little “soft”. Also the metal I am using is a Pewter embosing materiel medium weight (it was all I could find at the craft store) is there anything better?
Grizz