Calling all TIG weldors.. -
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Unread 05-04-2012, 02:47 AM   #1
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Calling all TIG weldors..

I know MIG pretty much rules the roost now in terms of offroad fabrication. Understandably, as it produces good welds in all positions on a various amount of metals. With a bit of training, it is a 'do all machine,' and an affordable one at that. For those who prefer or simply don't have a choice (for whatever reason), what do you prefer in the way of using a TIG machine? I ask this in reference to scratch start vs. footpedal. I've done some out of position TIG welding with a footpedal, and it certainly takes some getting used too. I can't recall off the top of my head ever using scratch start, but I feel that this way would certainly be beneficial to doing something such as a cage, especially with todays finger controls. I realize most people who have access to a nice TIG machine typically have access to a MIG machine, but I'm speaking TIG only..

If you're curious as to why I'm asking this, it came to me when I found an add for a syncrowave with a footpedal but no torch... usually its the other way around

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Unread 05-04-2012, 07:03 AM   #2
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Scratch start is just the very basic can be usable but if you have the resources to get and use a high frequency start or lift arc it makes it MUCH nicer...and a foot pedal to control your heat at all times is also a big plus all around,havin the heat very low on a start makes it much nicer to have more control before you "throw the heat" to it.making sure you are in the exact spot you want to be before the work is also real nice for controling the heat through the weld to keep the heat zone controlable and possible burn is also real nice for the stops,your not "yanking" the torch quickly away from the end of the puddle to stop the arc and possibly losing your inert atmosphere before the weld puddle cools,causing contamination.

The reason that machine has the pedal and not the torch is most likely because the torch is a consumable,probably was wore out or even used for another machine they bought in place of this one.

Finger controls have thier ups and downs....if your in a spot laying down on your back or in any funky position it could be nice....but in a good position i didn't like the finger control,i felt like it took more focus attention and steadiness from the torch hand to control the puddle more fluently everytime youd try to turn the knob for heat adjustment, it sort of hindered the focus and steadiness of controling the puddle...i geuss with alot practice with them it could be real nice..i just personaly like the foot control better when possible.
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Unread 05-04-2012, 07:08 PM   #3
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Foot pedal but many times we have used hand, knee, or a second man operating the foot pedal. It depends on the position and available space to wiggle into.

Re: the add
Maybe the seller is keeping his liquid cooler for his torch. We have both TIGs with coolers and others without. The chilled torches are best for prolonged welding.
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Unread 05-06-2012, 04:11 AM   #4
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im glad im not the only one that strugle with foot pedal. i weld food grade pipe and tanks and inside a ss tank runing foot pedal and filler is a frustrating task. i endup using knee also and feel like a monkey pating head and rubing stomach. But i will say tig is way beter for clean welds with no distortion and low heat. but tig require much patience in set up. if you try to fill gaps it is not desirable. and remember the faster you weld the less loss of chemical composition. which means cleaner weld.
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