Gee,where do I start on this one ? I have been burning scrap thirty years now,so i think i have a little imput. Propane/liquid oxy is the way to go to cut scrap.All you need is a oxy regulator and a regulator off and old barbecue(better flow) Either kind of hose will work and a torch with and oxy/propane tip. All the oxy /propane tips i have seen are two peice meaning that you can split them and clean them with a wire brush. If you burn the end off,you simply cut the end of the tip off with a hack saw,dress with a file and you are off burning again.Cutting scrap is a lot different than fitting,since the tip is never at 90 degrees to the steel.You wash more than cut with the torch(you wear a lot less sparks that way) This will not work with less than 100# of oxy. If you need to make a fine cut for fitting,put in a small tip,pile on the oxy,and the cut will look like it was cut with a saw. When I was first trained as a burner,the boss told me "a fitter will never burn and a burner will never fit" The rare times that i do fit these days,I have to mentaly tell myself to slow down the cut,run the tip at 90 degrees and clean off the rust/dirt before i start.Compressed gas cylinders will last about twenty minutes at 150# and a #8 tip(baby tip) a liquid oxy tank will last about two days. As far as production goes,a good burner produces 20 ton a day on a bad day of prepared 4 ft. On the crews i have worked on less than twenty ton a day gets you fired on the spot. Good luck burning and just remember that the furnace at the steel plant never checks to see if the cut is straight or square. As a parting tip,all burners have a quarter sized scar on each foot from hot ones in the boot,if you get a hot one,never stop,just grin and bear it and keep slashing
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