Cutting Propane Tanks (for art)

I know it has been asked before but does anyone have a sure way that they use for cutting propane tanks without getting hurt. I found a few that are too rusted out to be reused so i had another idea for them

that isnt my picture just an idea of what i want to do. Im thinking i may be able to sell them at craft/vendor shows with a friend of mine who sells etched glass and stuff.



Any ideas thoughts sugestions?