rolesyboy wrote: I have never seen one in action nor how clean the cut is
mark
im using mine more and more, as its fast and very quiet - which keeps the neighbours happy.
the quality of the cut depends on the settings, for 'hacking out' you can cut quite fast, but the edge needs cleaning as the slag leaves an edge - old rust, paint, underseal etc affect the quality of the finished edge. on clean painted stuff the cut edge can be perfect, ready to weld to.
the hardest bit is cutting a perfect edge, put im getting better with mine - also you have to recognise when the machine is playing up as its easy to think it needs more power, when actually the nozzle is worn, or blocked - i melted the end of mine clean off before i realised this! - like using a mig welder, once you learn what the symptons off a worn part its easy to fix.
the big advantage is that its 'free' the work i did with mine yesterday would have probably 'cost' 10-15 thin cutters, all the plasma cutter used was the air from the compressor and some electricity.
will post some pics up next time i go home with my camera