Resin Spots

by Kim Walker
(Ladera Ranch, CA)

Probs with sticky spots underneath when resin piece comes out of mold...


My casting is sporadically successful. I mean that even after ample time, I snap the piece from the mold and there is a sticky spot on the face of it.

Could this be from using silicone (releasing) spray in a small mold? My sizes range from dime size (or smaller), up to 2 in.

I am using the epoxy kit that calls for equal parts (resin and hardener). Maybe a bit more hardener?

Thanks for help
~k