Originally Posted by
acdii
That stuff is not as good at keeping epoxy from sticking though, the one I linked is specifically for epoxy release. JB Weld is after all an epoxy.
I wonder what else is in the Mcguiars, it says it has carnauba wax right on the can.
EDIT: I did some reading up on that Mcquiars mold release wax. Yeah is has carnauba wax but has a bunch of other chemicals in it as well, most of them harmful. The material safety and hazard data sheet says to use in a well ventilated area and avoid contact with skin. Sounds like pretty nasty stuff. Pure carnauba is harmless and releases fiberglass cowls from my molds just fine.