秒速赛车开奖人工计划

3D printing, also known as additive manufacturing (AM), is a process that adds material to create an object. This is the opposite of CNC machining, which is subtractive manufacturing, as it removes material to create an object. Injection molding is neither additive or subtractive, since it simply takes existing material and “molds” it into a different shape. Read more “3D Printing vs. Plastic Injection Molding: How to Decide”

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