A good hacksaw blade or two should get your though it (slowly). I would probably give up on that and cut the ends with a grinder and just not rely on the end to square up the frame. I suppose you could throw and end mill in the spindle of your choice and cut though it if you want a cleaner cut. The point is, there are several ways to do it without access to a metal band saw. Though, I gave up on a hacksaw pretty quick with the normal conduit and went to a small horizontal band saw which still took forever. Can’t wait to get home for the summer and have access to the big one at work.