Post #34353 by suffering bastard on Thu, May 15, 2003 3:49 PM

If you want to try heavier mold material like quick-crete or plasticized concrete, and are concerned about the mold not supporting the weight, you can make a "mother mold" to support it by planting the mold face down in a bed of plaster and letting it dry to make a supporting structure. (You may want to use a thin coat of dish detergent on the side planted in plaster as a mold-release agent to make sure you can get it back out).