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By Vince Gingery. Secrets of Building a Plastic Injection Molding Machine. You will learn the basic principles of injection molding and how to design and make your own molds. begin by making a simple mold to test the machine.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.