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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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Help with internal threads for 5c collet holder
I am making a 5c collet holder. I am at the point that I want to thread
the holder for the collets. One set of instructions say to bore the hole 1.175 and thread 20 tpi to a pitch diameter of 1.205. Another article says to bore the hole 1.191 and thread 20 tpi till collet spins on freely. This is quite a bit difference between the two. Anybody know which is correct? |
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