Need a tool to chase the rust out of threads on irrigation riser sockets.
Thread is 4" NPT internal. Yes---that's FOUR INCH.
Any ideas? I've never personally seen a pipe tap that big, and I'm sure the price would scare me. Might just have to offset the tailstock and make one. I think I've got a chunk of 5" 8620 around here somewhere.
Does anybody have a source for a 4" internal thread chaser?
Bill
Would a wire brush work for you?
"Ignoramus27719" wrote: Would a wire brush work for you? ^^^^^^^^^^^^^^^^^^ How about making a few hacksaw cuts across the threads of a nipple, so it acts sort of like a tap? If that works, but wears too fast, then case harden it.
Interesting, there's a tool for large external threads
Their internal tool is just the insert on a handle.
Inserts are about $15, maybe some creative thought will yield an interesting solution.
Dave
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