11372| 42
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一天不到斷了18根絲錐,一直找不到原因 |
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點(diǎn)評(píng)
你確定別人是先加工那條槽才攻牙?
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評(píng)分
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點(diǎn)評(píng)
這幾天也在打孔,不銹鋼的,M8的,12厚,以前一直都是7的孔,這次幾十個(gè)孔才攻一個(gè)就斷了,后來(lái)加大到7.2,輕松一下搞定,就差那么一點(diǎn)的大小
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