hey adam would it work if i bot lots of the hobby cast then make a box lay my chest armor then pure lots of rubber that way all i do is make another box for the jacket?
First of all, kind of a big necro, and second: stop making random posts to bring up yuor post count! i dont wanna be mean, but that's against the rules.
There are many variations that determine the length of the mold before it starts to deteriorate. Type of mold, what you are pouring into the mold. Are you using mold release. Are you doing lots of pours without giving the mold time to relax or sit. Plus many other reasons.