I forgot to mention, I cleaned the mold very well before pouring with alumalite amazing cast white. It cured fine, but here's a question for the alumalite guys. It says on the package I can mix 1 to 1 but fails to say if it's by volume or by weight. All the videos out there use tiny measuring cups and obviously I cant do so, as I used about 180 grams of resin. If it's by volume I will need to get large measuring cups.
Also, I filled the mouth in with clay so I would not get mold material in there