Although it is an additional note, ordinary ironwork drills can be polished easily according to the instructions, if dare to say it will improve the taste if polished with this polishing machine rather than using Sarah, the problem is the thickness like a long drill It is a type, change the cutting edge preset part of the product for wall thickness (OK with screw adjustment) Nazi G coat drill φ 10.5 cutting edge angle 125, because there is angle adjustment in the product, it is after polishing, then going into thinning The result was good if it was ideal to drop off vertically so that the grindstone would hit the flank, but the result was better than basic X, but if you adjust the amount of thinning, adjust the thinning amount to 0.10 - 0.5 shims at the bottom of the holder Finally, the rear part of the drill is cut by a large grinding stone to complete it, so the result of perforation was of course perfect.
Recently deep hole drilling has increased and material quality is also neva hard and I was asking veteran polishing of a large company to grind the edge, but the inside is poor and the stress accumulates on one side There was no centripetal effect and there was no centripetal force and the exit greatly swayed and it eventually became the cause of the drill breakage, and it was the days of the condition that it is also the cause of the drill breakage. Polishing, core type so how about thinning? Stunning X thinning! Well, now it's like a lie Switzerland has opened up without resistance, so far fluctuated at 0.2 exit and it was a great success! It was a product that was able to re-polish more precisely than a polishing machine that would cost hundreds of thousands of yen.
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