So I decided to use spiral pipe in my new shop and most of it I ordered from The Blast Gate Company. The trunk line is 12” and I have two branches that are 10” because I was given some old 10” spiral pipe that came out of a factory. It’s very heavy and much thicker than the other pipe that I ordered. My problem is that this thick, heavy 10” spiral pipe has buggered up ends. I can’t get my fittings to go on because the ends are not perfectly round.
So my question to you guys is how can I cut the ends of this stuff to make it smooth and round? It’s obviously too big for an abrasive chop saw and too thick to cut with tin snips. I have a machine/fabrication shop down the road that might be able to help but they are backed up for several months. I don’t know if I could do it with a grinder or a sawzall? I do have a friend with a Milwaukee circular metal cutting saw (looks like a Skillsaw but for metal) that I could buy a new blade for and try it. Any suggestions?