Re: Tig Welders?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jmorris</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: weazer</div><div class="ubbcode-body">Guy's, looking to pick up a decent smaller Tig welder. It does not have to be facny, but I would like to be able to weld aluminum with it. I know that feature jumps up the price of them quite a bit. What are your opinions on brands any better than others for Tig?
Thanks </div></div>
For aluminum you will need AC and HF.
As far as machines go, I feel you have Miller and the rest of them. You would be better off burning your money rather than spend it on a Chinese TIG welder, at least your pain would be gone after the fire is out on the bills. Trying to weld with a shit box lasts for as long as you keep trying. I would rather get an old Syncrowave than a brand new base model, they both will cost about the same.</div></div>
Agree with JMorris, look until you find a Miller Syncrowave 250 for your "starter" unit, and do not waste your money on something else.
For aluminum you will want the high-frequency AC, and if you intend to join anything thicker than thin sheet, you'll want a water-cooler for the torch (the later Syncrowaves have the water cooler built in, earlier models it is separate).
For aluminum GTAW you can use pure tungsten, or zirconiated tungsten. When welding mild steel, stainless steels, or nickel alloys, use 2% Thoriated tungsten.
Also, pay attention to good grounding and EMF shielding practices when using your high-frequency machines. You can screw up the TV, radio, and various electrical equipment/instruments around you when it is in use. Noticed many years ago that fluorescent light ballasts tend to die quickly near a high-frequency machine that gets used a lot.