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| Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Drilling vs reaming
Why do holes made by normal twist bits almost always end up being out of
round? Even with my drill press. A reamer cleans them up but what causes the problem in the first place? And is there anything I can do to minimise it? Thanks. John E. "when hatred calls with his package, refuse delivery..." |
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