PLASTER OF PARIS MOLD PROBLEM
This is my first attempt copyingABS cowl into fiberglass,i used plaster of paris to make a mold,iused a thin layer of petroleum jelly as a release agent onthe cowl,but it still got stuck,according to the box the plaster sets in 30min so I waitedover night to be safe, it felt totally hard and dry to the touch when i tried to pull the cowl out.I am wondering was it not 100% dry or moisture free is that is why it got stuck ordid inot put enough petroleum jelly.I used petroleum jelly sparingly cause i was worried later when i will trysealing the moldtoo much petroleumJelly will create problems as well...?