Okay so grade 11Metalworking class in Canada BC im making a 14 sided dice and i want to give a nice rainbow effect to the steel the only thing I have acces too for this is a MIG welder (wich wont work for this) and a oxyacteline torch wich im using here's the result after I blasted it any advice? (Extra info to reach 400 charecter requirment im 90% sure oxyacetaline torch is the best thing i can use for this seeing how its the only thing that blasts fire that could change the metals heat color and such begging to this steel im 16 need doing metalwork sence I was 14) #industry source