Grant Erwin wrote:

I now have a decent abrasive cutoff saw, cuts at 90 and 45 degrees. I
want to make a frame from 2" pipe, 45'ed at the corners. I'm trying to
figure out a clever way to ensure that when I cut the second end it
winds up being parallel to the first cut end. Probably doesn't matter
that much, but I've found that proper cutting seems to really help in
controlling welding distortion, and I'd really like this frame to be
flat (i.e. planar).

GWE

Just clamp a drilling vice to the end of the pipe and slide it along the
table.

John