Collins created a new article
2 yrs

Dry goods, the relationship between geometric angle of twist drill and sharpening accuracy _ vertex angle | #33

Dry goods, the relationship between geometric angle of twist drill and sharpening accuracy _ vertex angle

Dry goods, the relationship between geometric angle of twist drill and sharpening accuracy _ vertex angle

Original title: Mo Jin Game Record: Four kinds of mining tools, the drill bit and the golden pickaxe are the most powerful, and Xu Li is much more convenient to operate. There is a mining game content in the mini world