#1
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Tig vs gas welding
New to this, so bare with me
After reading about and watching video's on metal forming it seems that gas welding is the preferred method vs MIG/tig. What makes gas welding superior, or better suited for sheet metal forming? What would a half arsed MIG/tig welder need to know about gas welding? What is the preferred torch type for this method? Thanks in advance Josh |
#2
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I would say that gas/tig is preferred over mig more so than anything.
Gas welder setup is MUCH cheaper, but there are things you can do with tig that you cant do so well with gas, and vice versa. It all depends on what you want, your goals on any particular project, and how much money you want to spend. The panel I am working on right now, a box side for a 53 F100, I am gas welding because I want a largewr HAZ. The holes I am plugging are for an old spare tire mount, and every hole where it was mounted stretched the metal, so I am thinking a larger HAZ would assist me in shrinking it some. Some may say one is faster than the other. Most of the time, I am faster with tig. some are faster at gas. All depends on your own particular skill set, and what you want. Oh, and there is nothing wrong with mig, if thats all you have and/or can afford at the time. I have seen folk turn out some really nice projects using mig only. Marty
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Results = (Effort X Determination2) + Time |
#3
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I just watched a live demo on one of these http://www.sierrawildernessweldingsu...3B%20W3000-Pro
Any body got an opinion or experience with it? Would be like the Shopsmith of torches. Could save me some money on a plasma cutter at least for a while. |
#4
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http://www.cut-like-plasma.com/
I have plenty of opinions on this torch :-) can easily switch from welding cast to sheetmetal to leading by just changing tips, and Jim Spradleys customer service rocks! I like it, many people dont, but to me, in my shop, it is a very versitaile tool. Marty
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Results = (Effort X Determination2) + Time |
#5
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I seen one on Craigs list for $100 but can't remember where. Think it might have been when I was out in Fort Collins gonna do a search and see what I can come up with.
So I take it you recommend it? |
#6
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HIGHLY. I prefer it over other torches bcause you can do so much more with it. Reminds me, I had better get good at cutting with it, it does take a knack.
Marty
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Results = (Effort X Determination2) + Time |
#7
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I currently own both a mig, and tig unit.
The comments I have read that peak my interest are one like "easier to planish a gas welded joint" "easier to metal finish a gas welded joint" "mig/tig werk harden the material more than gas welding, and have more potential to crack out when werking" I have minimal sheet metal repair skill set, and would like to improve from fitting panels together good enough for plastic filler, to formed panels that require very little finish other than metal. |
#8
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Yeah I know, I tried it out yesterday and didn't look too impressive with it. Another guy started it in a puddle and blew molten steel all over the place and burned me next to my eye.
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#9
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Tig does not "work harden" the joint. This is actually a misnomer anyhow. Mig on the other hand, does something to it, I dont know the name but that happens is that the puddle temp is above boiling point, and the superfast cooling from temps in excess of 10,000 degrees causes it to get hard.
I tig and gas weld both, and i see very little difference between the two when it comes to workability. Mig has more cracking issues, yes, the possibility of that is much higher. But it can be done very well. Randy Ferguson produced some really nice work with a mig. I have few if any issues with my tig welds cracking, even on aluminum. But I am not welding and shaping aluminum as much as I do steel, so that may not be a good basline. Marty
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Results = (Effort X Determination2) + Time |
#10
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Reply
I have a question relating to this sibject, if the ali tig welding bead has the tendancy to crack while wheeling or hammer dolly work why not anneal the weld area before working. Would this make the weld soft as gas welding ?
Regards, Don |
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