MasterMold 12-3 is formulated for versatility, high elasticity and strength. Its elasticity, softness and high tear strength permit easy peeling from intricate and undercut shapes. At the same time, its unique dimensional memory permits casting molds without any exterior support in numerous instances. For example, a mold can be removed from a totally enveloped shape, such as a table leg, by cutting one side with a knife. Then the mold can be held together with rubber bands or simple fasteners for casting.
Molds are reusable dozens, even one hundred or more times.
MasterMold is safe to use and requires no special personal protection other than gloves and aprons to prevent contact with skin and clothing. Heating above 250 F should be avoided because harmful vapors can be released. They will not deteriorate over time and can be stored indefinitely for reuse. Yellow, no-slump thixotropic paste. Standard casting compound for molds or patterns of any size, that can be machined with common metal-working tools, engraving and reproduction molds.