Cutting 8-inch steel with a torch.
Last edited by Jon; Sep 10, 2020 at 10:47 AM.
Cutting anything that thick would almost have to be Map or natural gas, could be done with acetylene as long as it was a 6 or 12 pack manifolded system the torch we had in Kuwait had 9 straight line torches on the back 2 planetary & 1 1200 amp Plasma torch . 9 torches cutting strips out of a 40 ft long 10 ft wide 2" plate would suck 3 12 packs dry in a day's time 1 of acetylene 2 of oxygen would have used compressed natural gas but couldn't get a permit for large enough storage
thickest we ever cut was 4 inch on the 2 planet torches and 2 inch on the 9 straight-line the plasma would cut 4 inch but you couldn't get a true vertical cut on all sides
Did you happen to notice how small the kerf was relative to the thickness. To me the kerf appeared to be more along the lines of being proportional to cutting 3 inch or less . I am wondering how much bottom pre heat was used. I knew a guy who had a custom burning business back in the day of optic eye torches who had cut his mane out if a 4" cube in Chinese he owned 3 6 head and 2 3 head torches and it wasn't anything to see him burning on all 5 machines at the same time by himself. best burner I ever knew
NortonDommi (Sep 11, 2017)
I was in a mine truck mfg.company in Billings Mont.in 1992,and had a 6" piece of steel cut from a 4footX4foot block.The guy that cut it used acetylene& oxygen to preheat the starting cut then after it started to cut he turned off the acet. and just used the 02 at about 60-70 psi. He said once the cut was hot enough it didn't need the gas, if you didn't travel to fast. this was done on a computer controlled table,it was damn near perfect. BLF.
Last edited by user name blacksmith; Mar 14, 2018 at 05:34 PM.
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