04-12-2017, 11:43 AM
The orbital sander trick works for RTV molds.
200 degr seems a bit high on a curing temp, probably anything over 125-150 would probably work. The resin heats up as it cures and that heat helps it cure and harden. Thin sections don't generate a lot of heat and so need help to fully cure in some cases. When I cast car shells I put the mold with the casting still in it in a 125=150 degree environment (under a 150 W flood light). That way the thin shell sections fully cure before I take them out of the mold.
200 degr seems a bit high on a curing temp, probably anything over 125-150 would probably work. The resin heats up as it cures and that heat helps it cure and harden. Thin sections don't generate a lot of heat and so need help to fully cure in some cases. When I cast car shells I put the mold with the casting still in it in a 125=150 degree environment (under a 150 W flood light). That way the thin shell sections fully cure before I take them out of the mold.