My Dart Swinger Project!

Alright guys I finally have been able to get some work done I spent a couple hours the last couple mornings starting on my rear end I got it dissaembled the axles are out the backing plates off all the lines off etc I got all the old hangers cut off and made my first cut to narrow it. I ran into a speed bump with making the 2nd cut my dumb *** made the axle end the " long end" meaning that's the end I have to cut again and I cant figure out how to hold it sturdy enough to cut it. I'm using moparmandans pipe cutter and it's a chore turning it. I'm not sure what I'm gonna do yet but I will figure it out.