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 mig wire "gas free? 
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Firing on two.

Joined: April 27th, 2012, 6:48 pm
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Post mig wire "gas free?
the bottom door hinge has become detached-- (2cv btw) from the tube that it was welded "to" or is it "too"? :cry: hanged if i know,-- anyway
i have a mig but no gas or reg (i can get it no pompem)

my q is - is that wire that purports to be gassless( with flux inside) any good?
ive read that its no good :?
why?
thanks all


Last edited by ayjay on October 24th, 2013, 3:44 pm, edited 1 time in total.



October 23rd, 2013, 11:40 pm
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Firing on two.

Joined: April 22nd, 2009, 11:06 pm
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Post Re: mig wire "gas free?
its not great for quality work but for sticking a rusted hinge to the A pillar "tube" it would do. Can you reverse the polarity of your mig? it really needs to be Electode Negative

you dont need to run it with the shroud either so its great for access Ive a roll for exhausts and hangars etc

has a bad reputation as it produces a hot and messy weld so there is lots of clean up of spatter and it'll blow holes if there is any whiff of corrosion on your A pillar.

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October 24th, 2013, 8:08 am
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Firing on two.
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Joined: November 29th, 2008, 10:05 pm
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Location: West Sussex, U.K.
Post Re: mig wire "gas free?
No it's a load of shit. I have never seen a decent weld done with it and every single welding or fabrication business will use gas.

Anybody who says otherwise is completely and utterly wrong and doesn't know what they're talking about.

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October 24th, 2013, 8:19 am
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Joined: May 10th, 2013, 8:27 am
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Post Re: mig wire "gas free?
Hi I haven’t posted on this forum before but here is my 2 cents worth as someone that was a container repairman in the 80’s and has used both.
Flux-core / Inner-shield, is good for working outside in light winds with no wind brakes as the flux in the core of the wire will perform like a stick rod and harden over the weld. The down side is that there will be a lot of buck shot splatter that will burn you and need to be cleaned off the work after welding and you normally need to run your machine at on a little higher amp setting.
Machine Inert Gas is best used inside a shop or with wind brakes. It can make a neater welds and almost no splatter (I used to MIG in short sleeve shirts and one glove) and smaller wire size equals less amps and heat for distortion of project. Also any rust or dust on the wire can cause problems with the weld, and as always surface preparation and skill level of the welder come in to play. If I had the choice I would use MIG but either will do the job. Anyway that is my 2 cents worth. Dean


October 24th, 2013, 8:32 am
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Joined: April 18th, 2009, 11:43 am
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Location: Meneac, Bretagne France
Post Re: mig wire "gas free?
Russell wrote:
No it's a load of shit. I have never seen a decent weld done with it and every single welding or fabrication business will use gas.

Anybody who says otherwise is completely and utterly wrong and doesn't know what they're talking about.


I am completely and utterly wrong then and don't know what I'm talking about, despite using it every day. Yes it looks shit but none of my welding joints has ever separated. :mrgreen:
As a one off welding repair, go for it.

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October 24th, 2013, 9:38 am
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Post Re: mig wire "gas free?
Yep, go and find me a body shop or skilled fabrication company that would choose gasless over gas shrouded then. The wanky little reels you get from Motorists Discount or wherever are meant for cheapy cheapy backyard bodgers who think they know what they're doing. It's not meant for vehicle repairs and I've yet to meet anybody who prefers it to gas other than amateurs who don't have a clue. If you want to weld in a gale then use an arc set and get a good looking result with no inclusions into the bargain.

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October 24th, 2013, 10:05 am
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Post Re: mig wire "gas free?
I have a reel in my welder for fixing fractured exhausts, welding nuts to broken studs, etc., and it does the job, but it's a messy job! My welder doesn't allow for polarity reversal, so perhaps it would be better with a machine which was set up for it, but I'm not convinced. It's very spattery, and I find you need to attack the weld with a wire brush every time you stop, as the sooty coating that forms isn't very "sticky"! Out of interest, I've tried grinding all the way through a few welds, and they were all full of bubbles all the way through, so perhaps not ideal for anything too structural! I've got some body repairs to do on the 2CV soon(ish!), and will be sorting out some gas beforehand.

Also, as Russ has hinted, it's quite pricey when compared to proper wire, when you look at how much you get for your money. Having said that, if you only do a small amount of welding the majority of your larger reel of wire will probably go rusty before you end up using it anyway! ;)


October 24th, 2013, 10:17 am
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Joined: May 10th, 2013, 8:27 am
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Post Re: mig wire "gas free?
If you are only doing a small job after you finish, take the wire spool from the machine and put it in an air tight container with a desiccant to stop rust and dust getting on the wire. Army surplus ammunition cans work well for the small spools and an old sock with some rice in it works for the desiccant. I know it is not high tech but it works with both types of wire. Dean


October 24th, 2013, 10:34 am
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Post Re: mig wire "gas free?
Russell wrote:
Yep, go and find me a body shop or skilled fabrication company that would choose gasless over gas shrouded then. The wanky little reels you get from Motorists Discount or wherever are meant for cheapy cheapy backyard bodgers who think they know what they're doing. It's not meant for vehicle repairs and I've yet to meet anybody who prefers it to gas other than amateurs who don't have a clue. If you want to weld in a gale then use an arc set and get a good looking result with no inclusions into the bargain.


Thanks from your french bodger. :mrgreen:

I've used gassless since 2000, none of the painted 2cv's that I've done have any issues whatsoever and the paint is not peeling of or anything like that. So Russ you know ONE none skilled backyard bodger getting away with gassless. :o

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October 24th, 2013, 12:43 pm
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Joined: April 27th, 2012, 6:48 pm
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Post Re: mig wire "gas free?
thanks for all the replys fellas :D
i think ill send off for a small reel and give it a try, my mig is only a diy one and its only the hinge so won,t matter about neatness
removing the mask is something i wouldnt hav thought of!
thanks everyone ill post the results


October 24th, 2013, 3:42 pm
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