Hi Luke,
Have a look at this thread. I haven't read the thread to the end but I think the short answer is 'no you can't use a TIG as a plasma cutter'. If you could, I reckon there would be lots of us doing it!
As far as I know it's common for a TIG machine to be usable for MMA (stick or arc welding).
Tig and arc only, plasmas use completely different technology.
A Few years old I reckon as Clarke tigs have been inverter based for quite a while now. Looks a decent enough machine and it's in great condition, if it's the right money and you're interested then you may regret posting the details on here.
Another think Luke - that machine is shown with disposable gas bottles - In my humble opinion you would be onto a loser doing any meaningful TIG work with disposables. TIG goes through gas like there is no tomorrow. I started out with the Adams gas no rental cylinders but I was even getting though those quite quickly! The gas has to be pure Argon. If that is a DC only machine (I think it is) then you wouldn't be able to TIG aluminium. Sorry to be a bit negative - just want you to be forewarned. Don't be put off - TIG is a wonderful process!
Yeah i was going to get the bigger bottles from a local gas place who i get co2/argon for my mig, It was just it said inverter welder so i thought it did all three thats all.
Might be an old style case if it's an inverter as it's the same style case as their baby mig welders which made me think it was a transformer one, the only Clarke inverter tigs I've seen are this style;
£45?!!! Quick, have his hand off before someone else does!!!!!
DC, direct current, used for welding mild steel, stainless, copper etc, as opposed to AC which is used for aluminium.
Luke, I understand welding aluminium to steel is 'non-trivial' - have a look at this thread, started by me, as it happens, back when I used to work for BAE SYSTEMS (I was involved in the Type 45 ship programme, although I was on the software side - nothing to do with the structure of the thing).
Edit - Do'h too slow again - must learn to type quicker!!
As said, to weld aluminium you need an AC welder.
New they start at about a grand for a decent named one, used you still won't see one for under £300 and if you do it'll usually be an old miller or murex monster. Great machines but weigh about 1/4 tonne and have an insatiable appetite for leccy.
DC for steel, little inverter will chug away all day for 50p in the meter and weighs next to nothing.
Seriously, buy that Clarke and have some fun learning to tig with it, at £45 it won't hang around long, trust me.