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怎样手工打孔

更新时间: 2020-10-30 00:00:00     

手工打孔的方法:画十字辅助线,线一定得画好,画准确,首先用铅笔画线,找准了之后用油性笔覆盖。开始上金刚砂打孔针,打孔针对准一端中心点开打,必须水滴降温,防高温,松石脱水不可逆,工具也会减少寿命。一边打一边旋转,时不时的蘸水洗洗孔道,差不多打到直径一半的时候,掉个头打另外一端,继续边旋转边打,参考辅助线,控制方向,两头对孔就会会师,打孔就完成了。

关键词: 怎样 手工 打孔

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