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试一试先用细drill钻孔,再换大一点的,依次扩孔,直到可以放进extractor bit. 注意加钻油降温。

hellotom 2022-02-06 08:45:14 ( reads)

跟帖(2)

jassco

2022-02-06 10:01:10

I would start with a 3/16" drill bit. Small

DC_Jeeper

2022-02-06 13:40:12

谢谢