CREATIVE: Can I make molds from water putty?

Ted  from North Carolina asks,  ”Can I use Water Putty to make a mold then when cured, coat the inside with cooking spray or Vaseline and use it for a mold to cast parts out of water putty?”

Ted, Durham’s is intended to stick to itself, so that makes having both the mold and the casting medium made out of Water Putty difficult, and releases don’t work very well. We’ve tried lots of releases, and none are really good or release well without being so thick that it distorts the molded object.  The best molds for casting water putty are made out of latex or some other rubber substance.  You can get flexible mold making supplies at a lot of art or craft suppliers. In rubber molds, you don’t need a release for the water putty and it will release as it is turned out of the mold.