RE: LONGEVITY plasma cutter!
dont know the tech crap on them but the one we had was for automotive use came with a very big gas bottle ( from what i was told is what controls the beam of plasma) and was a pain to move around. it could cut anything any metal any gauge as long as you had a test piece to know for sure how hot you need it. the one we had cost a lot also got a lot of use. longevity? that depends on the user but if you buy cheap idk? just like the cheap $100 welders you see at harbor fright. the shop had a lincoln welder i think was older then me...lol. if you never used one and think you will get a persice cut you dont. you need a cnc machine for that. like i said i could get great cuts with air tools, could burn it then take it to the grinder. also man make sure nothing is under what your cutting. destoryed my work bench. didnt know i was cutting that too[X(].