Rick writes "This page shows how to make molds and do metal casting using rtv rubber and low temp metals, it also has sections on low cost plastic injection (very low cost) and styrofoam forming." Link.
Lead figure moldmaking and casting...
Rick writes "This page shows how to make molds and do metal casting using rtv rubber and low temp metals, it also has sections on low cost plastic injection (very low cost) and styrofoam forming." Link.
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