Awhile back, I asked about experiences with PMC. Not many had
used it. I want to describe my first and only try!
I would begin by establishing that I am a complete novice at
jewelry making and my skills, if any, are limited. I watched the
Rio two hour video on using PMC twice. I then made a simple
cross. It was cut out and thus had no seams to contend with. I
waited two days to cast it and found that It had dried and
crumbled! I reconstituted the clay and made the cross again. I
fired the model with a supposedly accurate kiln for 2.3 hours.
1) There were cracks through out the piece.
2) The cross had not shrunk proportionately. The cross was
3) I had called Rio and they had assured me that garnets could be
fired in the clay. Mine had been burned severely.
I am sure all of these errors were of my own doing but I will
not try the stuff again. My point is that it is not as easy to
use as one would believe! I.m back to wax modeling again.
Incidentally, the try cost $27 for an ounce of the silver clay.