How is plastic made into different shapes? This is done in a couple of ways. Injection molding is a widely known process around the world. The process uses an injection molding machine which uses heat and pressure to melt and inject the plastic into a mold. The mold has precise features that are cut with a CNC machine to mirror what the part looks like. After the melted plastic is injected into the mold it takes a few seconds to cool the plastic to hold its shape.












Kinda lengthy, but worth the look..........