Please help a noob with Tig

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I have a pretty nice Lincoln Mig that will remain my main welder, but Harbor Freight has a 130 amp DC Tig on sale really cheap right now so it's peaked my interest. This would be for occaisional use, and HF has always exchanged the tools that I break so I figure for $200 I can't go wrong, I mainly want it for wire artwork and welding in those tight places where the sparks thrown off by a Mig would become a problem, as I only do steel the DC seems fine.My question is this, can I use my mixed gas (75-25 mix) from my mig and still get decent results or do I absolutly have to get a pure argon tank, most of these welds will be on body work and bumpers where they get ground down so looks arn't everything, but strentgh counts on the bumpers.Also anybody else have one of the $200 HF tigs and care to share some experiences, tips, tricks, settings?Thanks ahead of time, Max Yedor
Reply:you need an inert gas, argon, or helium are best
Reply:A few people have run across this forum with them. Half complain of the problems with starting, poor arc and other issues. Others say they aren't bad. Gas - Argon is most widely used, in a pinch a few of us on here have used our MIG 75/25 bottles.John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Thank's guys, I'll probably just get a smallish Argon tank, but wanted to know if it's possible with the 75 argon 25 CO2 mix.
Reply:I tried argon/co2 and had a crappy arc and no control of the heat.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:OK picked up the welder today, I had a 20% coupon so it was $170 out the door including tax. Now I just need to pick up and Argon tank, but can't decide what size. I have a 120 CF for my Mig and run at 20cfm, and get months worth of welding out of it. I'm not sure what the average Tig uses volumwise, but was thinking of getting a 20 or 40 CF tank. Any idea how much welding I can expect to get done with that amount of gas?
Reply:Tig uses more gas.  If your not gonna grab it for everything, perhaps another 120cf tank will suffice.  Youll be suprised at how much more youll use.  (not as fast, pre and post flow etc).  You need to use these settings so that the arc will start and stabilize and purge the line of atmosphere (pre) and post is to help keep the hot tungsten from contacting the air (there is a reaction with oxygen when tungsten is hot).  If it was me, and I was gonna use it alot, I wouldnt think twice about getting a larger tank, say 200cf.  You will probably have to lease it.Various GrindersVictor Journeyman torch200cf Acet. 250cf oxygenLincoln 175 plus/alpha2 gunLincoln v205t tigLincoln 350mpEsab 650 plasmaWhen you can get up in the morning, Its a good day.Live each day like its your last.
Reply:TIG = Tungsten Inert GasInert gasses for TIG = Argon, Helium, mix of these.NO CO2, or O2 in the mix, these are MIG gasses.