I made a couple wrong cuts yesterday which ate into the remainder of the steel needed for the rear cross member and the steel yard is not open on weekends so, I cannabalized a portable air tank I have, because I don't use it anymore.. cut the fitting off the top and cut off the legs and handle. just need the filler neck, rollover valve and a couple fittings but for now, it can wait, frame is more important... it's a 7 gallon tank