Originally Posted by whisper
it's a really nice bit of kit
Got my fingers crossed you can't do it and sell it to me cheap
A few tips for setting up for light ss tube:
Use a 1.0-1.5mm thoriated tungsten (red coloured band)
Use a nice fine grinding wheel on a bench grinder if available and grind the tip of the tungsten to a nice sharp point with shallow taper. The shallower it is the more focused the arc is.
Have the tungsten straight on the wheel when you sharpen, not at 90 degrees, so the grain runs down the length of the electrode.
Use the smallest gas cup you got, you'll be able to see better then.
You can allow the electrode to protrude past the cup by 2-3mm to help your vision even more but if you find you keep touching down with the electrode then you can push it back in to prevent it. Or have another whiskey to get rid of the shakes
Gas flow should be about 10-13 litres per minute but indoors you could get away with half that.
A good method for first-timers is autogenous welding, i.e. without any filler rod. Outside corner joints lend themselves to this. You can use 2 hands on the torch and with no filler to worry about all you need to concentrate on is fusing the 2 parent metals together. You'll be doing stunning looking welds in no time but they're not structural so beware.
I could go on but I'll save it for another time, best of luck