来源：Bernard Marr
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3D打印机，很近又感觉很远，到底它能干啥？
1，3D打印机的工作原理
3D printing (also known as “additive manufacturing”) involves creating a 3D object from a digital file, building it up layer by layer. So, if you were to slice a finished 3D printed object open, you’d be able to see each of the thin layers, a bit like rings in a tree trunk.
简单来说，首先创建对象，其次逐层建构
The main benefit of this approach is that even complex shapes can be created much more easily, and using less materials than traditional manufacturing methods (which is good for the environment and the bottom line). Transport needs are reduced, since parts and products can be printed on-site. And one-off items can be made quickly and easily, without worrying about economies of scale – which could be a game-changer for rapid prototyping, custom manufacturing, and creating highly personalized products. What’s more, the materials used for 3D printing can be pretty much anything: plastic, obviously, but also metal, powder, concrete, liquid, even chocolate.
好处和优势也是非常明显的：
1，化繁而简，
2，材料最优，
3，运输成本
4，高效
5，原材料广泛
4D在3D基础上增加了自我修复功能，目前还是在实验阶段。
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1.骨骼和肌肉
2.卵巢
解决不孕症
3.糕点
4.披萨
5.建筑物
6.一条船
7.皮划艇
8.盲人作品
9.你自己（缩影）
10.形状记忆材料
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上述有没有觉得很兴奋的应用呢？
当然这些都是已经比较成功的。
未来的应用一定是更广泛的。
2020/7/28
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