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MIG Welding Overhead
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lintmann
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PostPosted: Mon Feb 26, 2024 9:04 pm    Post subject: MIG Welding Overhead Reply with quote

I was wondering if anyone has welding sheet metal overhead with a MIG nailed down? I need to weld in a few patches and as luck would have it, I'll have to do it upside down. I'm pretty new with the MIG but have horizontal welding pretty much figured out with fairly flat welds and good penetration.

I have a Lincoln 140 and I'm using .023" wire and an argon CO2 mix. Any set-up procedures or tips are appreciated. Thanks!
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Mike Fisher
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PostPosted: Tue Feb 27, 2024 10:25 am    Post subject: Re: MIG Welding Overhead Reply with quote

You have the right equipment so 'practice makes perfect'.
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VW_Jimbo Premium Member
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PostPosted: Tue Feb 27, 2024 11:49 pm    Post subject: Re: MIG Welding Overhead Reply with quote

ROTISSERIE!

Thatís how I weld upside down!
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Stinky123
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PostPosted: Wed Feb 28, 2024 10:22 pm    Post subject: Re: MIG Welding Overhead Reply with quote

The technique is the exact same. The electrical current "carries" the metal across and then Capilary action keeps it in place.

The only dif w/overhead is that it rains on you. The angle of the gun, the direction of drag, or push, is the same.

Start and stop, wait till you can't see the red-glow in your hood, then touch the trigger again. Go slow.

Spot Weld (I don't think that is the correct word) it. Tack it every 2-3 inches, then come back and weld an inch from each tack, and jump to the next tack. Keep going until you are done. Even if you do the stop and start as the 1st line says, eventually you'll blow a hole as it will concentrate the heat. If you jump to the next one, it lets the heat dissipate at the 1st spot.
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VW_Jimbo Premium Member
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PostPosted: Mon Mar 04, 2024 11:44 pm    Post subject: Re: MIG Welding Overhead Reply with quote

Stinky123 wrote:
Spot Weld (I don't think that is the correct word) it.


Maybe you are thinking, Plug Weld.

Or Stitch Welding.
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Stinky123
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PostPosted: Tue Mar 05, 2024 10:39 pm    Post subject: Re: MIG Welding Overhead Reply with quote

Ah yes, I think that it is Stitch
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esde
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PostPosted: Mon Mar 11, 2024 11:46 am    Post subject: Re: MIG Welding Overhead Reply with quote

Fast, hot welds for overhead. You donít want the metal to get heat soaked and then the weld will sag or drip out
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