Used TIG Welders
Used TIG Welders
The most important part of the TIG welder is the power source. The power source provides the current required create the arc. The arc must be easy to start, steady and unwavering after the start, and easy to control. Good quality TIG welders have built in starting circuits that make starting the arc easy without actually touching the tungsten to the work piece. Once the tungsten touches the work piece then it is contaminated and should be reground.
You can get a lot more bang for your buck by buying a used brand name TIG welder over buying a low buck off brand cheap TIG welder.
Decide on the thickness of metal you need to weld then increase that by 50 percent. Always buy more current capability than you think you need. It is better for two reasons. First there will come a time when you need to weld a thicker piece of metal than you planned on. Second it is always better to weld in the mid range of your welder’s capability than to weld at the upper limit. The current control is better at mid range and the duty cycle is higher. So, if you are thinking that a 135 amp welder will suit your needs then buy a 175 amp welder. You will be glad you did.
Another point I like to emphasize is to buy a welder that operates on 220 VAC. I strongly disagree with using welders on 110VAC power. The reason is that at 110VAC the welder draws twice the current as the same welder operating on a 220VAC input power. Especially don’t buy a small welder that only operates on 110VAC input power. The small 110VAC buzz boxes are more trouble than they are worth.
Buy a quality brand name TIG welder like a Miller TIG welder or a Lincoln TIG welder and you will have a machine that will last for years and provide great quality welds.
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