Tater, I am cutting through 2 foot by 5 foot thick pieces they are solid and 35 pieces is a 205,000 lb rail car. I don't think a acetylene torch is gonna handle it. 200 psi to boot. Like I have said before its all in what u prefer and feel safe to use. Using combustables is extremely dangerous throw in gss, hydraulic fluid, other flammable liquids and combustables, scrap under pressure, etc and cutting scrap becomes a very hazardous job just be as carefull as possible and only do what u feel comfortable doing.