plastermold

  1. J

    Do I need a plaster sealer for casting in an UltraCal 30 mold?

    Hello guys, I want to create an UltraCal 30 mold on an Monsterclay model. After that I want to put silicone in there, but I saw in an YouTube video, that you have to put a sealer (mold soap plaster sealer, the link is below) on the walls in the inside of the plaster-mold before starting filling...
Top