DIY Moldmaking Skills: How to Reproduce a Solid Part as a Thin-Walled, Hollow Cast Part

For those of you doing small-batch production work, here's a super-informative video on how you can take a single solid part, then create molds for it so that you can not only reproduce that part, but also take out most of the unnecessary mass beneath the surface. "This makes the part more economical to cast and produce," says industrial designer Eric Strebel, "particularly when you have to make 130 of them."

Here he shares the benefits of long experience with a bunch of clever tips and...

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