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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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can you tap large diameters w/ lathe? tapping acme threads?
Hi,
I was wondering if it would be possible to tap the interior of a ~4" diameter pipe? I can't imagine a tap so large...? Can I tap it on the lathe, by somehow getting the cutterhead inside (I'll need to go back to the shop on Monday to assess if it can)...? If not, are there places that will economically tap it for me? Or, just rethink my design to not require this; although it just makes the design better if I can do it. Secondly, is there a way to tap for acme-style threads; are such threads preferred for higher-load applications like bringing together to vise jaws? thanks! -Bernard Arnest |
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