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> OT welding comparison, gas and mig
John Kelly
post Mar 15 2004, 09:33 AM
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I've done a quicky welding comparison between gas and mig for those interested:

http://allshops.org/cgi-bin/community/comm...d=9980156295554

John www.ghiaspecialties.com
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East coaster
post Mar 15 2004, 09:56 AM
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How'bout TIG? I've used TIG for my butt welded patches.
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Bleyseng
post Mar 15 2004, 10:10 AM
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Nice post, I use MIG cuz I gave away my gas rig a few years ago.

Geoff
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Zaney
post Mar 15 2004, 11:17 AM
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Geoff,
What would be the best option for a newbie welder being a rust-o-ration project? Farm it out or Buzz Box repair? I have seen some decent welders at Home Depot or are there places that rent them out? Are these not the correct ones to use?
Any info is greatly appriciated. (IMG:style_emoticons/default/smile.gif)

Thanks,
Nate
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John Kelly
post Mar 15 2004, 11:41 AM
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Hi Eastcoaster,

Nothing wrong with tig. I just don't use one. They are an excellent way to weld...gas welding is a much simpler process requiring less expensive equipment and is very high quality.

Hi Geoff,

Nothing wrong with that! Mig is a great all around welding method, and a good compromise.

Nate,

Most folks will recommend a mig as the easiest form of welding to learn. If you get serious about doing the best possible work at some point you should try gas welding or tig. Here is an article I wrote on welding and metal-finishing which might be of use to you:

http://www.type2.com/library/body/wlsh.htm

John www.ghiaspecialties.com
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lapuwali
post Mar 15 2004, 12:11 PM
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It's something of a horses for courses issue. If you're doing structural welds that won't be seen (longs or footwells, for example), then MIG is easy and quick, and doesn't cause as much distortion. If you're doing welds on a visible body panel (a patch panel on a fender, for example), then gas will produce a softer weld bead that's much easier to work with hand tools. MIG weld beads tend to be hard and relatively brittle, and require grinding rather than hammering or filing to shape.

Gas setups have the advantage of being cheap and versatile. You can heat things for bending, or removing stubborn, rusty fasteners, with a gas torch, as well as weld with it. You can only weld with a MIG torch. The flip side is you can learn how to use a MIG torch to produce useful (if not pretty) welds in an afternoon, where gas welding takes much longer to master.
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Zaney
post Mar 15 2004, 01:15 PM
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Thanks!
What are some decent Mig Welding set ups that are not too$$$?

Nate
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tdgray
post Mar 15 2004, 03:28 PM
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Nate,

I am the ultimate amatuer welder... so I went for the inexpesive setup. It is good for small welding jobs and non-critical cosmetic stuff. All purchased at Home Depot.

Lincoln Electic 110V wire welder + Applicable Mig Kit+Welding gloves. Mig bottle from local ABS and the most important thing in my opinion..... inexpensive (45.00) autodarkening welding helmet from Harbor Freight Tools. Total cost about 250.00 for the welder and mig kit plus helmet and gloves.

Pratice a bit and have fun! (IMG:style_emoticons/default/beerchug.gif)

Todd
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Andyrew
post Mar 15 2004, 06:24 PM
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And to think, my first welds where with an arch.. I doubt you can make a but weld with that guage steel with an arch (IMG:style_emoticons/default/laugh.gif)

Very informative, thanks John!

Andrew
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bongo monkey
post Mar 15 2004, 06:40 PM
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A bit confused... That is gas welding (oxyactelene) vs MIG, correct? But is the MIG gas-shielded with argon/CO2 or was it used with flux-core wire? It looks like the MIG was gas-shielded to me, but then I rarely use MIG, I use the TIG whenever I can. Sorry for my ignorance, but I'm not a professional welder, I just work in my school welding shop.

When I do use my MIG, I usually use flux-core on the thin gauge sheet metal (it just works better for me).

And I agree with you, I like gas welding more than MIG, though I prefer TIG. The rods just give me a lot more control over the weld beads. Hell, I even like arc better than MIG (but I almost never use it).

Andyrew, I've managed to weld thin gauge with arcs before, although I had the seams on a thick sheet of copper.
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rick 918-S
post Mar 15 2004, 11:02 PM
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I miss my oxyactelene setup. I can gas weld like crazy. I'm getting a new setup this fall.
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John Kelly
post Mar 16 2004, 10:14 AM
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The mig weld is with a shielding gas... 75/25 I don't like flux core much...a bit harder to see the weld puddle, and it leaves a slag over the weld. Part of my dislike for it is I had to use inner shield wire in the shipyards years ago...hated it!

John www.ghiaspecialties.com
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Gint
post Mar 16 2004, 10:23 AM
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Thanks for the info John! (IMG:style_emoticons/default/beer.gif) Bookmarked for reference.
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