I'm building my first frame, and as I was laboriously hand cutting and hand filing my top tube miters, I remember seeing pictures of someone using a bimetal hole saw to cut miters in steel tubing.
How many of you do this? What brand of hole saw do you use...I assume the Milwaukee hole saw I got to cut holes in plywood wouldn't be sufficient? Can a decent drill press be used to cut these miters, or do I need something more along the lines of a milling machine? Any other advice, or limitations on what type of tubing I could cut using this method? I'd assume that cro-mo would be fine, heat treated cro-mo would be tough but do-able, and super tough stuff like Reynolds 953 (which I am in no way even thinking about using) would be a no-go.