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The Castaldo Moldmatic System depends upon the extreme precision of the Moldmatic frames to form mold locks in Ready-Made Rubber Molds automatically. Each rubber mold frame is provided with two halves which are secured together by heavy-duty bolts and wing nuts, a removable handle, a bottom plate, and a thicker top plate/plunger. Castaldo Ready-Made Rubber Molds are first placed in the frame, then the plunger is placed on top, allowing one mold frame to make molds in four different thicknesses: 3/4", 1", 1 1/4", and 1 1/2". Moldmatic mold frames are made of machined aluminum and are available in three different sizes.