its been a while since i posted here the first time asking about buying a tig welder, i ended up getting an ac/dc set off ebay, older thyristor(?)set, has done me proud to date.
Its really good on dc, stainless welds are coming along nicely, but i do need it for ac from time to time and increainly more so.
I am thinking about going for an inverter type machine that has a few more features/controls etc, basically on ac is where i need a bit more control.
The machine i have currently is a sinewave, the only controls it has are amps, pre flow and post flow.
Welding on ac can be really frustrating sometimes, really unfocussed arc, constantly dancing around all over the place, tungsten balling up etc etc.
Apart from more practice, would ac balance/frequency controls help with these problems?
I have my eye on a few machines at the moment, but its going to cost a fair bit more to get something like what im looking at, e.g. Cemont 250 triwave/Miller Dynasty 300/etc.
My only fear is, i spend a fair whack on a seconf hand one of these and it packs in on me, how likely is that? I understand inverters have a shorted life expectancy that more traditional set ups?
I realise thats about 101questions all at once, but any help would be appreciated. many thanks
Niall.
p.s. a link to some stuff i have been making. http://www.mig-welding.co.uk/forum/showthread.php?t=28755&page=2
Its really good on dc, stainless welds are coming along nicely, but i do need it for ac from time to time and increainly more so.
I am thinking about going for an inverter type machine that has a few more features/controls etc, basically on ac is where i need a bit more control.
The machine i have currently is a sinewave, the only controls it has are amps, pre flow and post flow.
Welding on ac can be really frustrating sometimes, really unfocussed arc, constantly dancing around all over the place, tungsten balling up etc etc.
Apart from more practice, would ac balance/frequency controls help with these problems?
I have my eye on a few machines at the moment, but its going to cost a fair bit more to get something like what im looking at, e.g. Cemont 250 triwave/Miller Dynasty 300/etc.
My only fear is, i spend a fair whack on a seconf hand one of these and it packs in on me, how likely is that? I understand inverters have a shorted life expectancy that more traditional set ups?
I realise thats about 101questions all at once, but any help would be appreciated. many thanks
Niall.
p.s. a link to some stuff i have been making. http://www.mig-welding.co.uk/forum/showthread.php?t=28755&page=2