I just made my first mold using a Smooth-on Co. silicone mold material. The
mold looks fine but the finished pewter castings come out covered with heavy
pitting.
I coated the mold cavity with talm powder or graphic powder but I still get
this pitting effect on the finished piece. Can anyone tell me what I'm doing
wrong or what I'm failing to do? Thanks.
- posted
17 years ago