It remains to be seen how well it would work for larger drill bits, but the clocksmiths seem to have had success with their tiny drills and broaches.
6 个月
House Digest on MSNThe Best Method For Sharpening Dull Drill Bits To Bring Them Back To LifeDrill bits can be sharpened by hand or with a bench grinder ... After three or four attempts, there will be nothing left so a ...
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