Appreciate the replies.
My current approach is to stabilize the conduit [2"] with 12LC ViceGrip large locking clamp. I have a tubing cutter and I use that to score a 90º. Then a 32 tpi Lennox hacksaw ro do the cutting -- changing the position of the clamp.
Then a touch-up with a large half-round file. Also a plumber's or machinist's swivel deburring tool [Vargas].
I post this because I got fired for doing quality work like this.
~Peter