![]() Rather than taking large pieces of solids-plastic, wood, metal, or whatever-and carving pieces out of them, 3D printing uses lasers or electron beams to melt down powdered substances and put down the melted material layer by succeeding layer until the shape is finished. The difference between traditional manufacturing and 3D printing can be seen as a matter of choosing between subtraction or addition. However, 3D printing has more recently become of great interest to the manufacturing community-and it is well on its way to becoming a major player. When you think of 3D printing, you may picture a small desktop machine that turns out little plastic figurines or models of the Eiffel Tower. ![]()
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