"Bob May" wrote in message
...
| The fastest would probably be a broach. The broach would be a single pass
| solution and would happen in seconds. You'll spend more time swapping
parts
| than the actual work itself. Do backup the joint for more repeatable
| machining.

This one I considered awhile, but all I have is air, arc, and a torch,
no machine tools. If I could secure a chisel in a smaller piece of pipe
somehow, then pound on the inside pipe/broach, I wonder how far it'd get
before I couldn't get it out anymore or broke the chisel.
I think I have a chisel for the air hammer, I'll have to see how well
that does.

I won't be able to get to this idea for a few days, I just had my
shoulder operated on yesterday and the tradeoff with being able to use both
sets of fingers in more pain. Can't win somedays... All ideas will be
entertained/attempted eventually, depending on how much I can get away with
doing when the wife isn't here to watch over me!