Plaster and Resin This topic has 1 reply, 1 voice, and was last updated 2 years ago by Katherine Swift. Viewing 1 reply thread Author Posts October 22, 2022 at 9:54 pm #146106 BritGuest Hello! I understand that you should use a flexible mold when using resin to cast, but I have a plaster mold I’m using and wanted to use a clear resin to create a galaxy look. If I break the plaster mold around the resin, would that work? October 23, 2022 at 7:35 pm #146254 Katherine SwiftKeymaster Hi Brit, I’m afraid plaster molds don’t work for resin. Author Posts Viewing 1 reply thread The topic ‘Plaster and Resin’ is closed to new replies.