🔥 MIG Welding Steel with Pure Argon

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People like things to be simple. They want to use the same gas that they TIG weld with in their MIG setup (or the other way around). Lots of people ask if they can use one gas for all their processes and the answer is really no.
There is a reason that certain gasses are recommended for specific applications and processes.
Today we are going to show you what happens if you try to use your 100% Argon bottle to MIG weld Carbon steel.
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[@denniskalivoda]

As a retired Vocational College welding instructor, always nice to hear your spot on demonstrations and knowledge of specifics in the trade.

[@mrmidnight32]

Thank god you made this video, I was about to use my TiG bottle for my new MiG because I don’t have 75/25 yet. Glad I watched this before trying it.

[@chiathach206]

I use pure argon on mig wire before. Its work just fine. Not as smooth or pretty but it will work ..

[@melgross]

@@chiathach206no, it doesn’t. Cut the welds apart and you’ll see for yourself.

[@danfarris135]

You solved my problem. Ive got an old telwin mig that I bought 40 years ago to weld quarter panels and floors when restoring cars. It worked great but the gun/ cable wore out and I couldn’t find a replacement till last year. I have a bottle of 75/25 at home but I haven’t used it in about 5 years. I had a project here at work so I bought the old girl in and hooked up to the 100% argon line instead of using my tank. I couldn’t get any decent bead out of it no matter what I tried. I now have that answer thanks to you.

[@davesage9190]

I guess the obvious question (for me) coming out of this video is - since you say you have all the various gas mixes available why don't you SHOW US the difference with the same settings and different gasses. For example you say you get undercut (or something) with pure argon. Show the undercut with pure argon and then switch gasses and show how it is eliminated. You say you don't like the profile of the weld with the pure argon. Then switch gasses and show us how it gets better. Everybody seems to have an opinion. You are in the unique position to show the differences having various gasses and machines at your disposal. Thanks for the videos. I really enjoy them.

[@totensiebush]

You need significantly different settings on different gas mixes to get good welds (CO2 vs C25 being the two that I've tried). With the wrong settings it'll come out crappy even with the best equipment.

[@davesage9190]

True I guess. But it appears (in his opinion) there were no settings from "typical" to ridiculous that produced a good weld with pure argon. SO was the point of this video to prove that you can't get a good MIG weld with pure argon? Sorry I'm just trying to find a take away here. I'm still learning and I don't even use MIG. Great video's. I'm learning a lot.

[@melgross]

@@davesage9190it’s not just “his opinion”. The welding industry does extensive testing because reall welding is not done at home in the garage where weld don’t matter that much. Welding has been around for over a hundred years and MiG for almost as long. There are always a few people who think they know more than what industry has found to work and not work. They’re wrong.

[@tsl7881]

Dave did you watch from the beginning? DIYers want to buy only one bottle ($250-400) click their heels together and wish pure argon for TIG was the cure all. The answer was you can, but please don't. There are still commenters here they say he is not adjusting it right.

[@TrevorDennis100]

Hey, that was really interesting. I used the MIG at my Menz Shed today, and it was connected to argon with no other bottles to switch to. The person who last used it was not there so I went ahead and used it and I got that same tall, thin bead. I have a feeling that when that person is back, he will say that it makes no difference and we might as well make do with the one bottle. We even had a spare bottle of argon! I've been retired 17 years now, and I never counted myself as a great welder (I worked 40 years as a toolmaker at Ford Research & Engineering in the UK), and my near sight is crap and the MIG welder we have is no great shakes, but I know I can still do a lot better than the result using an argon shield gave me today. I'm just glad I used more than enough weld on todays job, so it should hold.

[@fisherus]

I know this is an older video but, I have been trying different gasses on a older Lincoln 100 that I converted to gas from flux in my early days of welding. Using a C-10 mixture of 90% argon and 10% CO2 running at a #28 flow rate has this machine running better than I ever thought possible. In some occasions I increase the flow rate up to as high as 40 but rarely, as I am also using. 023 and. 025 wire. I now have a small portable unit, that runs on 120V, I can use in a bind off my generator and get decent welds.

[@eugenesaburi1757]

Thank you for this. I’ve been using 100% argon for AL MIG in a spool gun and tried using it for steel and ran into the same thing you are. I’m going to get a tank of AR75/CO25 tomorrow to finish my steel project. Thank you!!

[@joshuastevens2013]

How did the project come out with the 75/25?

[@eugenesaburi1757]

@@joshuastevens2013 Tried with pure argon but beads just were tall and ropey. Played with settings but still not to my satisfaction. They piece I was welding was part of a retail counter with welds visible so this was a no-go. Going to C25 made all the difference... totally worth it for my purposes.

[@kenkapus6373]

I explain to my welding classes that CO2 is an arc stabilizer, this demonstration helps to explain that. Thanks.

[@RandyBoBandy.]

I've always wanted to see what happens if you strike a 7018 on heavy piece of aluminum.

[@gary-powdercoatingspeciali3093]

Very educational for a guy who's trying to teach himself. Learned just one more thing that will help me learn without a fight. 90/10 will be my next bottle and we will see if the quality of my beads improve because right now they suck.

[@luboszama]

Thank you sir. I didn’t understand why my welds look so ugly and finally I got it after watching this video. I am going to change argon for CO2. Learned a lesson 👍

[@dorsetengineering]

Really interesting test here Bob. We commonly have trimix gases here in the uk for gmaw, we typically get 3 blends, sold based on the thickness you want to weld.

[@gordonloessl2822]

I have the biggest debate at work about using the proper gas for welding. All these managers just don't get it.

[@gunlover1955]

After watching this the answer is yes you can weld mild steel with argon it just may be a little harder or not look as good, but it can be done and if you just want one gas the gas is argon because you can also weld Aluminum with it!

[@davormrsic8765]

I wwllding with pure argon with high amperage and volts and it welds fine. You just need to get smooth mellting like lava. Not for tickest material.

[@adrianayala9753]

@davormrsic8765 any tips you got for mig welding with 100% argon would be helpful as all I see online is some what negative videos like this one. I mostly do aluminum tig so I don't usually have a need for 75/25 so if you got any tips for controlling a 100% argon mig weld would be dope

[@davormrsic8765]

@@adrianayala9753 As I said. 100% argon wellding is for marine A4 stainless steel where you wellding pure inox because of rust. It is for fatt 10+ mm fatt material. I used Mig mag welldings but for thickest mm like 0.4 to 0.1mm is better use tig wellding machine. You get Smoother welds. Because when you wellding with 100% Argon or 90/10 you need high amperage because you need to make weld mellting on material like lava. It needs to be smooth and soft. Not harsh. I dont know how to explain you better.

[@melgross]

I wouldn’t recommend it. Look, you can weld almost anything with any gas, but that doesn’t mean you’ll get a good weld. If you really don t know what a good weld is, then you might think a bad one js a good one.

[@104littleal6]

I don't think I ever tried straight argon. Now I know I won't. Thanks for the vid.

[@martinperez9816]

Best regards from Colombia, I thank you for this wonderful video, great explanation that clarifies my doubts about welding with pure Argon and all the problems I had, thank you again.

[@etebol]

The best welding videos are with Mr Moffatt.

[@billarroo1]

Gettin that sweat in your eyes ain't fun, last year my helper by mistake put 100% argon on the mig, 035, 70s6, I put 2,000 lb helper rubber springs on a 1ton rear end, welded the pads on and said what's wrong ? The bead had a high crown, didn't seam to have good penetration, so I stopped, cut of the pads and stick welded 1/8 inch 7018, then as I cut off the pads it DID have pretty good penetration but that high crown and arc was too smooth fooled me, anyway I played with settings still high crown, I shut it down as I was closing the bottle, Aha!!!, there it was 100% argon !!! GREAT VIDEO BOB.

[@benmolendyk771]

Thanks

[@leonardpearlman4017]

As an aside, I've tried to buy things like 90Ar-10CO2, Argon 1%O2, others you mentioned there... and local welding supplies had NO IDEA what I was talking about, didn't seem to want to get some in... so that's why I have a bunch of flow meters and try to mix stuff on the spot for labs. I have found that businesses that claim "If we don't have it, we'll get it" don't actually mean that, it's more like "If we don't have it, you don't need it"! SMITH makes these gas-mixing boxes with knobs on the front, you can just dial up a gas mixture... that's what I really want!

[@brianmaas7058]

Those are common gases. Find a different supplier.

[@bobmoffatt4133]

Indeed!

[@tsl7881]

Yeah you go to a lot of businesses to get something . The young person at the counter; Nope , never heard of that, thanks for stoppin' by.

[@willlewis9194]

I just learned a valuable lesson for the installation of our robot welder, thank you so much buddy!

[@AndySomogyi]

I only know TIG, stick and gas, never done mig. But if you need more oxidizer in the weld, what if you just turned the argon gas flow rate way down?

[@CL9k24a3]

In Europe we spray with 82argon 18 co2 aka c18 gas. Basic workshop stuff, Spray starts at around +27 volts.

[@ericlee7665]

Thanks for proving this point man. I learned this lesson a long time ago, thinking that my machine was sucky, because it wouldn't flow a good puddle. Ironically I thought that 100% Argon had to be way better than 75/25. Then I ran some .030 on a buddy's junky Harbor Freight machine with 75/25, and it welded rather nice. Hmm..how the heck is this backyard welder out-performing my Miller?? So yeah,...hooked up a bottle of 75/25 to it and what do ya know?....it flows like butter. Thnx again guys, these bits and tips are gold.

[@queenprotein]

Doesnt the heat build up from the previous weld eventually help create the undercut or was it cooled somehow between passes?

[@28godzilla]

I started Argon welding and Flux cored welding today, it’s different from my normal stick welding. But if there’s one thing I like more than stick with Argon and Flux is that, it’s more efficient and looks cleaner when you work with it. I really enjoy doing both a lot, and I’ve only just begun.

[@anoopkumartiwari3333]

Sir why we use argon for stainless steel why we do not use co2 or o2 for ss

[@jasonchalkhorse9951]

Hay. I realise I'm a couple of years late here but just wanted to say thanks for this video. Ive spent the day trying to make pure Argon work. (I use it for TIG) Now I realise I've been chasing my tail. Ill be ordering new gas tomorrow. Bug thanks

[@thomastallman5024]

Thanks loads Mr Mofit... I started watching to try and improve my stick welding. As i could put metal together , but looks like shite. And as i watched i found i could improve my over all welding in general. Im a repair guy so to speak. I do a little of this and that. And nothing to big or important to care about a bead profile.. Weld , grind and paint....... But after yesterday's repair. I definitely noticed a change in pentration flow and bead profile in my mig welding. And my stick welding is loads beter now....... Being self taught will only get you so far in some things... Technique and values are good information to have .....

[@RAWRMotorsports]

Will tig do this if I got 75/25 ? I got activity in my tig welds and can't figure out why .. its suppossed to be straight argon in the bottle

[@MrDLRu]

Funny thing, worked in a structural fab shop back in New Hampshire, Mon Fab, and on the Lincoln remotes with 3/32 wire, they ran straight argon. Ran beautifully.

[@dougankrum3328]

Years ago....35 or so....I bought one of the first Miller-Matic 200's....was building a lot of woodstoves/heaters....1/4" and 3/8" HRS and pipe.....spray arc....tried 100% argon...same results as you got here....ended up using 90/2/8 or 90/8/2 Argon, Co2, Oxygen....seems like the 90/8/2 was best for me, ran mostly .035"....some .045" for the spray arc......although there was also 92/8......Argon, C02...they all cost about the same... I had a small one man shop, I ended up with 5-6 different gasses...Oxy, Acet, Argon, C02, 90/8/2 and some helium....

[@chadadkins9760]

We use a 90/10 mix and an 80/20 mix with 811N1 .045 wire dual shield flux and the 90/10 is more of a spray 80/20 is for most everything else including overhead. My personal setup preference is 80/20 .045 at 28.2 volts and 490 ipm for vertical and 29.5 volts and 575 ipm for flat to do a 3/16" bead size and 630 to 650 ipm for anything bigger... the 90/10 is more of a flat weld only gas mix. it's awesome for spray transfer but it's so hot it has higher tendencies to give you undercut in the worst places!

[@ZAPATTUBE]

You once did a video with Flux-core MIG and those welds looked very good.

[@Welddotcom]

ZAPATTUBE Instagram, not KZbin.

[@sharkrivermachine]

I used to have a small 110 volt home type MIG welder. I had gotten a bottle of pure Argo to try and weld aluminum (big mistake). One day I ran out of Argo Co mix and tried to use the straight Argon bottle. It splattered and popped and otherwise made a mess of the weld. Thanks for the video.

[@brianmaas7058]

Pure argon is used for aluminum.

[@StreuB1]

Yep, a small 120v mig and argon is a popcorn and rope producer, not a welder. Sometimes these videos are good because it shows people why that cannot understand. Like you said how you learned. Love these types of videos even though it pains Bob to make them lol

[@nealmunro6087]

Thank for your help with the gas i am going to use 75/25 .if you have any more advice I appreciate it. Thanks you for your video

[@lukeellis2961]

would it be alright to use pure argon with mig just welding on car bodys mainly just tack and plug welding

[@wink5360]

I always like the bloopers at the end of your videos.

[@salvadortapia3851]

I only have a full argon tank right now and im trying to weld a stainless steel exhaust 16 gauge am i gonna be fine or do i waste the money and switch out the argon for tri mix? Its mig by the way

[@nick99995]

Thanks, I've been having problems with pure argon. Thought Tri-mix was a bit out of my budget but after struggling like you did wish I spent the money.

[@madmax092003]

I weld 100% argon, mig .035 / 316 stainless, works great for me, miller 210.

[@TechieTard]

Yeah, it's stainless, not mild.

[@illicitKO]

So cool our instructor did the same to show us the difference in gases!!

[@kellieh71]

Is opening the valve on a 100% Argon gas without anything attached such as a regulator what would happen?

[@craigkeller]

When I reach for a bottle, it’s not argon.

[@brianmaas7058]

If you were in a pinch and just needed to tack something together straight argon could be used. The use of straight argon as shown in the video does exactly what you just saw....produces poop. The comment you made about oxygen and that others say "oxygen is detrimental to the weld". Well yes it is in large enough amounts. Common shielding gases for mig welding that use a mix with oxygen does not contain high enough levels of oxygen to negatively affect the weld. Typical mig wires such as an S-6 or an S-3 contain enough deoxidizers to compensate for this and more. As long as you have an argon rich environment, 80% or more, you can run in spray. Great video.

[@oldowl4290]

I arrived here needing to finish up a small project and ran out of C25 but have a tank of argon. Seeing this I have to ask how much welding on a flat sheet of 3/16” with no joint which is sitting directly on top of what is likely a 1/2” sheet of the table.. will greatly affect it like a heatsink and not allow for good penetration unless you really crank up the heat. In other words, I’d like to see this done with the test plate clamped off to the edge of the table to see the setting differences.

[@4BoltClevo]

Hi Bob, it would be awesome if you did this with some of those other gases. I just do hobby stuff and I had to go for just one gas and it's 2.75% O2, 16% CO2, and the rest Argon. That seems pretty good, but it would be awesome to see the difference between that and say 25/75 etc.

[@jeffgood6441]

Argon is the way to go my man

[@unapologetic7900]

Can someone explain why I can TIG weld Stainless (304) using 100% Argon and 308L filler Rod, but you can't MIG Stainless 304 with 100% Argon and 308L Wire? Same Parent Metal, same heat, same filler .... seems illogical to me that you can't use the same Gas.

[@incolink]

I have already suffered through this exercise myself its so comforting to see a pro welding instructer lay down a heap of shit welds its totaly the gas not my weak skills

[@philmitchell9552]

Today i was doing some welding on my car... went from argon mix to pure argon (without knowing) and i was losing the will to fucking live. I tried everything possible and just could not get it right no matter what i tried and it did turn out to be the gas.

[@ScottysBackYardBBQ]

i am a stick welder for over 40 years, i now have to learn how to weld all over now

[@paulkremneff8033]

Lol, your gross weld is 1000% better than my best weld

[@Hitman-ds1ei]

Can you revisit this with pulse mig

[@VolodymyrTorkalo]

Would be nice to hear explanation of physics why pure argon is perfect for TIG and bad for MIG

[@Tachikomaster]

Good work! Saved me from scratching my head too much why 100% argon mig welds look way they look.. Video request: sheet metal straightening with oxy-acetylene. Should be fun enough, cant find any decent info about it, thanks.

[@_TheDudeAbides_]

If the oxygen in the mix helps the weld, does that mean it is MAG (A for active gas) compared to MIG (inert gas)?

[@bluesight_]

I think he might have meant to say CO2.

[@PRO_GAMER_SIM]

what does the wire speed does? does it make it weld hotter?

[@tsl7881]

Yes. Wire is the current on mig.

[@davidquirk8097]

Thanks for this. Just bought a new welder and tooled up with pure Argon for the TIG side of the work. Tried MIG today, with pure Argon, and wondered if there was a fault with the welding set because I couldn't get the weld to flatten out. In hindsight I wish I'd used the stick or the TIG for the job. Oh well, I'll just have to grind it back tomorrow and start again.

[@jeffgentry6728]

I work in a snowplow up fit shop I hadn't welded in 25yrs and it was stick welding, they use mig welding which I had not done and are using 98/2 mix and my welds look like shit and I tried everything I could think of to change the look of the bead all big and ropey, I had a sneaky suspicion it was the gas.

[@tomg4084]

Can you weld steel with helium/ argon? I don't weld enough to buy another bottle I mainly use argon to work on my aluminum boat and flux core when I need to weld steel. It would be nice if one gas would work on both steel and aluminum.

[@leonardpearlman4017]

This seems like an advantage of TIG: One gas for all situations! I understand that some oxygen is necessary for MIG (MAG!) welding on ferrous materials. Needs some oxides on the surface for emission? In England they have Argonox1, Argonox2....

[@SolarMillUSA]

Except TIG is slow deposition rate compared to MIG. (don't get me wrong, I love TIG, but if you're welding a trailer frame I'll be done in half the time or less with MIG)

[@stclairstclair]

I worked with a guy who would show off his beads, They came out like cnc welds, it was like art.

[@michaelromero3871]

Which esab are you using?

[@outdoorzone]

Is it ok to use the share the same flow meter for my c25 cylinder and my 100% Argon cylinder??? Thx!!! Great vid as always!!

[@DrDGr2]

What his the official name of the Plate full of holes (surface of the working bench) ?

[@ls2005019227]

Very interesting test, I've always wondered. I have a Millermatic 252 (runs C25) and a Miller Syncrowave 210, which is a multi process (Arc, AC/DC Tig, & spoolgun Mig). While I always use the 252 with C25 for migging steel, I was curious if I could stick a 1# spool in the spoolgun with the pure argon, in a pinch. The results in your video were pretty apparent, but it still begs the question: why does pure argon work well for tigging steel, but migging steel performs better with a CO2 mix? Very interesting, thanks again.

[@davidmarquardt2445]

The reason is with TIG your not transferring metal across an arc.

[@tsl7881]

Paul did a version of this. Commenters said he didn't know what he was doing. They could make better welds all day long, he just didn't know how to adjust the machine

[@breinbjerg22]

we use a argon 97% co2 2% and nitrogen 1% blend. to spray works perfekt :) Great video, fun to learn :D

[@brianmaas7058]

That's an odd mix. I bet it's pricey.

[@totensiebush]

I don't see why it would be, none of the component gasses are particularly expensive (unlike helium). I'd expect cost to be pretty similar to straight Argon.

[@breinbjerg22]

I have heard it's for a hottere weld pool :D

[@markbreidenbaugh6033]

Hey thanks so much for showing and talking about this I love learning the technical whys and why nots.

[@daviddroescher]

At 8 minutes I noticed an etching effect similar to AC on aluminum, it was when you outran this etching effect that the puddle would sputter and give off its obnoxious noise contesting the action. I've done straight argon mild Steel worm tracks undercut , get the right gear change the wire( to dual Shield or similar )or change the gas.

[@jeffmay1332]

Is bead blasting metal down to clean white metal as good as grinding or sanding to shiny metal when welding?

[@bobmoffatt4133]

Sure

[@horseblinderson4747]

Ceramic flap discs are good too. Some scale is just too hard for zirconia alumina regardless of the grit.

[@chrisponsauto]

Hoping you guys can help me. I just got the esab 215 ic to use for mig brazing for automotive use. Can’t get the setting right seems to worp the metal and put a lot of material down. Is the rebel a pulse machine I can’t find any info on that. Machines like the HTP pro pulse 200 have a setting for silicon bronze (mig brazing). Because of high strength steels being used in vehicles today they want the lower heat of the silicon bronze instead of traditional mig welds.

[@kerry4951]

Great video, that was a question I had about using pure Argon. You answered it, thanks

[@tonymontana9858]

Won't even reach 1100 ° Cause pops has a heat laser

[@garydoherty8347]

Newbie here, but I see you turning up the heat to make it lay down, so why do you keep jacking up the wire speed with it? Seems to me if you want it to lay down, more heat and a slower wire speed would come closer to doing it.

[@tsl7881]

Voltage tends to broaden the weld, wire adds heat though they are interrelated.

[@Laura-wc5xt]

your gas info is spot on...thanks for putting that info out....best regards....

[@macguyver209]

I ran out of CO2 one day and tried Argon and Argon CO2 mix and found I had to pour the gas on at high volume rates to rid the weld of brown haze, only with high gas rates did it seem to weld reasonbly... all previous welding was only with CO2, which I have done well...

[@scotmaclean7657]

Running strait argon will typically pile up. But let me point out that with solid wire you should be pushing your welds, not pulling!

[@MrSoarman]

Change wire to Flux core and be amazed.

[@SnakePliscan]

Argon is not a reactive gas like CO2 hence you don't have the dig factor, add just a small amount of CO2 and its a whole new game. I run 80/20 with 0.030" and go from short circuit to spray with just a turn of the dial. 80/20 is a great all around gas for me with wet out and penetration.

[@Sinister_Reaper]

cool

[@MadMetalShop]

Don't use a drag angle with solid wire and your beads will lay down. I have never found a use or benefit draging solid wire.

[@Laura-wc5xt]

he was pushing

[@jakeg4070]

We just switched my shop from 75/25 to 90/10 and all of the old timers had to take time off for emotional distress. Then the switch from ER70S-3 to ER70S-6 ALMOST KILLED EM. At the heat we run its smoother with less spatter.

[@bobmoffatt4133]

LOL

[@rvalcourtpersonaca]

One day you’ll be an old timer too Jake.

[@aceseightsazhvacsparkyandg8138]

What about a tri blend gas ? With hallum?

[@robbin763]

I think you can use tri-mix on both tig and mig. I am not sure however.

[@iankidd6654]

Hi I normally weld with gassless wire or pure CO2. I needed to do some aluminium welding so got some pure argon, worked OK. Back to steel now and because cylinder hire is expensive in Oz and I have a cheap supply of CO2 I am going to try mixing the gasses using a 'Y' tube connector just before the connection goes into the back of my MIG. Any thoughts? Also when should you use spray and when should you use short circuit Thanks in advance Ian

[@bobmoffatt4133]

Spray on heavy sections in flat and horizontal. Short arc in all positions, bevels, thinner sections.

[@GermanCRMZ]

What would be the best gas mixture for thin metal like bodywork on cars? I have an old Lincoln sp-100. Thanks in advance.

[@kevinrisher7658]

Propane

[@AATopFuel]

I use 75 Argon 25 Co2. I started with pure Co2 and did not like it at all. I use ER70S-6 or ER80S-D2.

[@totensiebush]

I won't claim to be a good welder, but for relatively thin materials I find the key to getting CO2 to work reasonably is a VERY short arc length. For thicker stuff it isn't quite as close, but I still end up running closer than I would with C25.

[@tonymontana9858]

Anything over 2.5 forget about it

[@micmike]

I get it not good, appreciate the evidence against using one gas. Would have liked to see you make comparison welds. Thanks

[@jeefflanyt]

When good ole Mr. Moffatt said he would be right back, he was going to take his gear off and go to Makeup, now that's some pretty funny stuff right there.

[@tsl7881]

Yeah, I thought his makeup was melting a little.

[@rodhancock7371]

How about smaller wire?

[@massa-blasta]

This test was pathetic, he used 0.035 wire

[@desertrider325]

What’s the best mix options for MIG on steel?

[@nightsaber2272]

Is that soot around bead gives by pure argon?

[@Likkmymiddletoe]

So im in my second year welding class and my classmates used to tell me that i run smaw too hot, like running 1/8" 7018 at 160-175amps (if im feeling frisky ive gone up to 210), my teacher says its fine, at what point does it become not fine to do and what do you think about welding hot and fast like this, either way i love the videos and learn more then i knew i could, thank you

[@SnakePliscan]

Careful you don't start undercutting the weld bead when you're cooking like that, your welds will look better an be stronger when you're in the sweet spot which is just back of where you're playing now. Are you welding 1/4-3/8 plate, heavy pipe?

[@Likkmymiddletoe]

Mostly 3/8 plate, i rarely get undercut with it though it gets close sometimes, theyre not always the prettiest welds thats for sure, when welding that hot how much weaker does it really make your weld?

[@SnakePliscan]

Well then sounds like you're taking full advantage of 7018s low hydrogen characteristics in preventing weld embrittlement.

[@randyharris1991]

What if you switched polarity? Who knows it may oddly work. Because in tig and youre welding steel typically you would use DCEN why not try it out that way?

[@bobmoffatt4133]

DCEN mig on steel? No way. Not me.

[@randyharris1991]

I know i feel the same way you do haha just thought why not give it a go?

[@randyharris1991]

Unless theres already some knowledge behind it that you have experienced, as i havent tried it myself.

[@bobmoffatt4133]

I demonstrate it all the time. It's not good.

[@randyharris1991]

Fair enough Mr. Moffat. I will search for it thank you for your videos, I find them informative and entertaining as I am a young journeyman welder myself.

[@rickdelorenzo3881]

We run our millermatic 252s wide open with stainless .035 trimix

[@garyscoville7741]

Hi Bob. Gary from CT here. You mentioned "spray" welding, what is that?

[@jesusisalive3227]

I run 100% co2, I've never had any problems getting good welds and its cheap!

[@piter_sk]

We used pure CO2 in welding school, it waas good.... We tried welding or more like said tacking galvanized 1mm thick, then we used like 90% Ar 10% CO2 or what mix it was...

[@RoyMeraki]

Peter Szöke can we do stainless steel mig welds with pure co2

[@ccfmfg]

I suggest for a a Economical A/C alternative to Stay Cool while welding use 260 Air Con. In the future only Weld while in Your Car at 60 MPH with Your 2 Front Windows Rolled Down for a Nice Cool Breeze.

[@mattio79]

what process uses SF6?

[@nickheywood8758]

brings up a curious point, Helium with MIG, would like to see the result of that!

[@SnakePliscan]

Helium adds heat and is usually at around the 2% in a mix. A 80/18/2 could be interesting. going vertical it may be a little to fluid.

[@andrejochimsen498]

Interesting to see you hold the torch in a upright position, instead of pushing it in a more skew position. We here in Africa just weld with pure argon.

[@tsl7881]

Does it weld like this or do they have different additives in the wire there to compensate for everyone using pure argon? But i am surprised, a lot of people use pure co2 cause it's cheap, but the blend runs better.

[@andrejochimsen498]

@@tsl7881 it works with argon..

[@rbrought]

It seems like if you had a pure CO2 bottle and pure Ar bottle, you could just mix the gas (at different flow rates) then you could modify the mix to what you liked best.