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钻铜怎么磨钻头
更新时间: 2021-05-27 17:17:58  

1、找好砂轮,将1.7的钻头放在砂轮边上,先磨尖端部分,磨成三尖2刃型的。

2、修整尖部尺寸,可按下步骤 首先修刃尖高至0.3mm,顶角115度到120度, 其次修横刃,使其

关键词: 怎么 钻头

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