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。
所有跟帖:
• I would start with a 3/16" drill bit. Small -jassco- ♂ (89 bytes) () 02/06/2022 postreply 10:01:10
• 谢谢 -DC_Jeeper- ♂ (0 bytes) () 02/06/2022 postreply 13:40:12
• I would start with a 3/16" drill bit. Small -jassco- ♂ (89 bytes) () 02/06/2022 postreply 10:01:10
• 谢谢 -DC_Jeeper- ♂ (0 bytes) () 02/06/2022 postreply 13:40:12