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Is it possible to use plaster of paris without a mold?

What kind of gum can I use to mold 'plaster of paris' and where can I find it?

  • I want to do cold ceramics. What kind of gum can I use to mold 'plaster of paris' to make cold ceramics and where can I find it?

  • Answer:

    I always like what Mike says. Plus I don't have a clue what you mean by "gum". silicone & latex molds can be "gummy" in some ways, so you may be thinking along that line. I used Por-A-Mold mostly & prefer this in casting anything, including plaster. But you can also find other mold making materials in local hobby craft stores or art supply stores. Here's a link to Dickblick's section of Mold making materials. http://www.dickblick.com/categories/moldingcasting/ hope this helped!

Addy D at Yahoo! Answers Visit the source

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I don't know about gum, but the usual method is to model the object in soft plasticine clay (earth clay moistened with oil, not water) that never hardens then to make a flexible rubber mold, most commonly with liquid latex molding compound which picks up all the detail but is backed with a thin shell of plaster for support. Then the rubber mold is pulled off the clay and after drying to allow strength to build, plaster is mixed and poured in to make a copy of the original. Examples here. http://users.ticnet.com/mikefirth/neckmold.htm#ZIPPER and scroll up one screen and down one. and here showing painting on. http://users.ticnet.com/mikefirth/castgobl.htm#HEADMOLD

Mike1942f

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