MiniMetalMaker：创客打造的金属3D打印机
早些时候，创客父子兵Scott Vader和Zachary Vader在纽约Maker Faire上展示了自己做的金属3D打印机。遗憾的是由于运输的过程中弄丢了喷头，所以只能让观众看看机器本身和以前打印出来的成品。http://img.i3done.com/uploadfile/data/2015/08/26/55dd2c33b12f2.jpg
而在indiegogo平台上，我们发现了另一台创客打造的金属3D打印机MiniMetalMaker。这台机器使用一种特殊的“金属粘土”，它由特定金属粉末和水溶性有机粘结剂混合而成。在制作金属模型的过程中，机器采用“滴蜡”的方式把融化后的“金属粘土”打印到平面上，成型后再放到一个温度介于600˚C-900˚C之间的陶器窑进行烧制，除去“金属粘土”里面的有机粘结剂。
目前他们的机器可以打印含有金、银、铜、铁等几种材质的“金属粘土”，打印成型后可以根据实际需要对成品进行弯曲、抛光、钻孔等二次加工。目前机器最大的打印体积为6cm×6cm×6cm。
MiniMetalMaker采用直驱涡轮控制着XYZ轴的运动，运动精度为每毫米1600步，运行速度达到10-100毫米/秒。目前这台机器的打印精度为450微米，未来他们要对机器进一步改进，让精度提高到200微米。
http://img.i3done.com/uploadfile/data/2015/08/26/55dd2c35141b3.jpg
团队预计还需要六个月才能把机器完善，除了改进机器的设计构造、配套软件外，他们也想把MiniMetalMaker改造成双喷头，尝试不同材料之间的混合打印。
他们希望产品使用起来能够像Makerbot那样简便，并进而把自己演变成不同“金属粘土”的材料生产供应商。
最后想问问大家的是，家用的金属3D打印机未来是否会受到政府更多的管制？早些时候媒体曝光了全球首款D打印金属的手Qiang，能够发射50枚ZiDan。如果不设置相关法律限制不法分子获得这种设备的途径，恐怕未来谁都能轻易买到各种金属武器了。
原文出自：http://www.i3done.com 前面介绍过让孩子感知手上产生“气”的游戏，这个游戏同样可以用于感知大脑。在这个过程中孩子的眼神和表情会变得非常平静祥和，因为纷繁复杂的感情会在能量中得到满足和释放。同样，通过集中注意力锻炼呼吸的游戏也可以感觉到自己和大脑合而为一。
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