how to grind a twisted bore, twist drill bit grinding, a twist drill, how to grind a twist bit, a molar of a twist drill, a method of grinding a hemp drill, how to grind, twist drill grinding. jingdong is the grinding online shopping mall of the domestic professional twist drill. this channel provides the mood of the twist drill bit, the molar price of the twist drill bit, how much is the moltrians of the twist blew, how much money for you to buy a full range of twist drills how is the grinding method.
is this still experienced, what kind of drill is to be worn out, it is good to drill, is there a petroleum drill pdc drill a twist drill bit drill supply price and purchase price. generally, the grinding bits are all grinded into twist drill, and the tips are generally grinded into a r-type n-type. in fact, the twist drill can grind the four diamond x-type r-type n-type n-type, in fact, the drill bit is grinding into these meaningless big, everyone knows.
master teaches you how to grind the drill the edding of the twist bit is carried out by the worker's hand-held drill bit on a grinding wheel. this sharpening method is high for workers' technical level, and is low-profiling efficiency, it is difficult to effectively grind high quality drill bit. the new drill bit created by schleff, the geometric shape of the high-speed drilling drill bit is taken. figure 1.
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