Welding Aluminum with Gas and a Torch
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- Join The Welding Geek as he dives deep into everything you need to know when it comes to welding aluminum with gas and a torch.
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When I did my apprenticeship as a mechanic, I had to oxy acetylene weld aluminium in order to pass welding. I've only done it a few times since. One of the more difficult parts of this process is knowing when you are getting close to welding temperature. You can use a match stick as a temperature crayon. You drag the back end of the match across the material. It will leave a black line when you are close to temperature. You can also use a bar of soap. Same thing happens. Have had many arguments with 'welders' on mine sites about gas welding aluminium. Just about everyone that I have met thinks it's impossible. Would like to see you do the same video with oxy acetylene. Regards Greg
FYI in all the UK welding textbooks Oxy/acetylene recommended to use a carburizing flame for welding aluminium.
well you people drive on the wrong side, so what do you know
@@shamancredible8632 i was giving you a chance to rethink your advice Which does not follow the current accepted welding procedure for O/A welding aluminium . By pooling the advice improve the overall knowledge. With this as the reason for your channel little is gained by “the wrong side of the road “
FYI. 25 years as welding lecturer Further education. Mig. Tig. MMA Oxy/A
So many different ways to weld aluminium. Neat stuff really enjoyed that.
Not sure that I'll ever gas weld aluminum....but I've always wondered about it, & a lot of great information in this video. Thanks!
One thing I’d like to point out for the new welders is that he says that gas welding is extremely picky. What I’d lick to add to that is that welding on aluminum in general is picky. The best way to fight this is to always brush in one direction when preparing the metal and clean it from other contamination along the way. Patina that covers the aluminum has a higher melting point than the aluminum underneath.
Good tips, I've only TIG welded Alum. and was also told oxides will start to form within 2 minutes of cleaning it.
So don't clean it then go take a lunch break lol.
🤔 could you weld thin gauge aluminum with a small butane torch & aluminum mig welding wire dipped in the correct flux ?
Man weilders have incredible shoulder strength and dexterity holding a touch steady for long periods of time!
Question: If I have a TIG to tack with, why not finish the weld with TIG? If I don't have TIG, only a gas torch, what is your recommended technique for tack welding?
With my time as a Airframe mechanic. We never weld on aircraft. Mind for a few items that parts are not available, TiG , and NDT. Usually Titanium , stainless steel alloys, Inconel, maybe a few others.
In the older days they built the Airframe from 4130 all gas welded. They wrapped with thin fabric and used a resin.
What does NDT mean? not familiar with that term
@@drd1924 Non Destructive Testing
If I'm tacking with TIG, I'm welding with TIG. Sorry. ... But the hydrogen torch is interesting.
Yeah I thought this technique is primarily for cast aluminum, as thicker castings have high thermal mass and need no tacking to repair cracks.
*re: tacking, demonstrater appears to be touching tungsten to aluminum much longer than in a lift arc scenario, are they lifting at all?*
tacking with tig can be nice for stuff that is getting mig welded but you dont wanna feather the tacks after
You can tack with a torch. I guess he just can’t
@@zachcrowl8504 tig gives better heat control for tacks this is basic shit
This is how the famous “REACTOR” car body was lovingly fabricated in the 1960’s. , it was featured on Bewitched & StarTrek and many other tv shows of the time 👍🏻
Good video, informative. Is it possible to torch weld aluminum without needing to sell a kidney? My doctor tells me I need the one I have left after selling the first to buy the oxyacetylene setup. Thanks
A close up shot of the finished weld would have been nice. Other wise good info
Yeah sorry the close ups got cut but I have some over on the weld app under the welding geek
Why didn’t they show the weld bead in an up close shot?
they did in previous video when he was introduced
Yeah sorry the close ups got cut but I have some over on the weld app under the welding geek
@@theweldinggeek thanks!
The close up is now in the video that is in the mobile app. Go check it out now. Matt also does a strength test to show you why he gas welds.
Thank you. Always informative and fun.
Central California watching
To prevent the blowouts, I like to put about a half inch tack on one end, then work toward that end.
Great presentation and I learnt a lot. Could you show me how to weld alli with oxy/propane please.
Been looking forward to this video! Flame weld great for exhausts too
Excellent presentation!!
That looks difficult; thanks for showing. I'm cool with SMAW and recently added MIG.. but yikes!
why no close up reveal at the end?
Yeah sorry they got cut but I have some close ups over at the weld app under the welding geek
Very cool! Great skills and useful information
Great video. Tha ks for the education
Thanks for information 👍👍👍
Mixing chamber design and tips seem very close to, if not a copy of, the Henry/Cobra 2000.
Fantastic Video.....thanks for sharing your technique, Paul in Orlando...sharing with all my welding friends...
I would like to see how soft the aluminum is after doing this. Can you weld a boat hull or would it not stand up to the beating after. Is this a project you are willing to take on to show durability of the weld method?
@Alaska Life If you watch the extended version of this video in the WELD app, you will see Matt put the weld through a stress test and show you how strong the weld really is.
Great Video. What Harris Flux are you using? Can't find any that Harris makes currently.
I used to wash my hands in bowls of acetone several times a day when I worked at a fiberglass shop. I'm paying for it though, it's definitely caused some serious health issues
Uh oh. What happened?
I really didn't know about this until I saw this video. This is good considering I am just starting welding school.
Very cool. I appreciate you showing this. What circumstances would you gas weld aluminum instead of TIG?
When you don’t have a TIG machine.
I use it on seams of dragster and funny car fuel tanks it’s a better weld then a tig weld for that application
Panel fabrication and repair. Both the weld and the surrounding parent metal are annealed, making further shaping and finishing easier, along with reduced chance of splitting.
Wow! All BS aside I enjoyed this video as much as any welding video I've seen, your delivery and weld shot were excellent, I have been welding for many years but there are always new processes to learn from. What is the main reason you choose to weld with gas vs tig. I have not ever heard that question answered. I built a Gas tank for my motorcycle with 3003 only time I ever used it, no body filler was needed when it was finished, only about 40 hrs of work.😂
A gas weld seam holds up better to shock and vibrations compared to a tig welded seam, it’s flexible and strong at the same time
Interesting. Most Al stuff I do is high volume spoolgun. Truck frames and floors are thick amd dirty so the 100% cleaning action of spoolgun saves a lot of time.
Doesn't start welding until 10:20 in the video. Also doesn't show finished weld.
Did you flux your part as well as your rod?
So you will still need a TIG welder?
Been waiting for this!!! Thanks so much for doing it!!
What size tip, verses material thickness? Are there different grade filler rods for 6061, 3003 & 5052? Thanks.
Does the acetylene can work like that ? Just asking bro
Why gas weld if you have a TIG welder set up for aluminum? How do you gas weld if you don't own a TIG?
I was thinking to myself “why the hell would I gas weld if I already had a TIG welder…”
Can you weld some low alloy or mild steel with the hydrogen torch system?
Can use a torch to fix a aluminum engine ?
Welding aluminum is relatively easy using oxy/acet if you have access to flux containing flouride as a major component. Lately I notice it's not available, and if you have a siurce olz let me know. thx
I'd like to see a twin carbon arc torch being used for aluminum welding. Of course flux is allowed. I did however see rocks get molten by a single carbon arc at DCEN.
Why would you gas weld AL instead of tig or mig weld it?
Not everyone has a machine capable of welding aluminum
@@jeepwk6.5L he's tacking it with a tig welder
@@michaelriccardi424 yeah I’ve never seen that done before. 😂 anyone I’ve ever seen gas weld use the flame to tack it also.
@@jeepwk6.5L I guess its just for the demonstration
@@michaelriccardi424 beats me, lol
Over 3mm th. use mig. Push/ pull wire feed or real on gun.
Down side of OA is use of corrosive flux. So it's only for butt & outside corner joints. Fillet. Lap. are flux traps.
You should always hold a lit torch close to your face and eyes without protection. It's the smart thing to do, right?
Yeah, sure, just hang out with a burning torch. No biggie. WHAT COULD GO WRONG??? (I say as I look at the Nike swoosh scar on my forearm caused by hanging out with a lit torch.)
What about oxygen propane? Have you tried this set up yet ? I watched a guy make an aluminum motorcycle gas tank with oxygen propane
Wish he showed that weld up close…
Yeah sorry close ups got cut but I have some over on the weld app if you where curious under the welding geek
The close up is now in the video that is in the mobile app. Go check it out now. Matt also does a strength test to show you why he gas welds.
no luck to weld aluminum by torch , how you did it ? no flux either .. ,
Technic likes TIG!!!👍🏼
Reminds me of the Cobra torch.
Funny you say that. The designer of the Blue Feather torch modeled it after the Cobra torch and made some improvements on the old design. Nice eye, man!
@@GRich120 be careful man, some old school guys will kill you if you say a cobra torch can be improved on hahaha
Also the Henrob, or Dillon torch.🙂
Came here to say that
If a person has a tig setup, they're not going to try to weld it with a torch.
Would like to see a pass on a auto panel
a close up would be necessary for me to determine the quality of your work. But otherwise pretty nice.
Welding Aluminum with Gas and a Torch, but before you need tack it with TIG))))
Sure seems like an undisclosed sponsored video… 😏
The regular green goggles wont filter the sodium glare. You need either cobalt blue or purple didymium lenses to block yhat or uou cant see what your doing. Those lenses however eont block the ir. The lense manufacturer of the didymoum lenses specifically says they are not sufficient for welding. I caljed them and they explai ed tvst you have to back it up with the green ones. Then your good. You can use tge round cobalt or didymium ones in the green welding goggles eith the round lenses (the crazy inventor goggles) or you can use the square ones in the appropriate goggles. Just put both the green and blue or green and purple in. I use a a pair of Bolle Tracker goggles in #5 green with a "prescription" insert, but i just had them put plain didymium purple lenses in the insert with no prescription.
Back to the old days isn’t always the best way.
A blue lens works best
Interesting, but really kind of silly to tack with the tig and then finish with a HYDROGEN torch. My gas supplier laughs at me when I ask for hydrogen
Is there still alot of gas welding these days?
Neat video but I am confused why anyone would ever do this. Why spend a few thousand dollars on new torches, new glasses and special lenses just to warp, I mean weld aluminum when you already have an AC/DC Tig welder? It just does not make sense to me.
What? He did more tig welding than gas lol.
Man I wanna see a dude lay a bead with Oxygen/Actelene and a #1 torch. You have so much in new tooling you could have bout a used Dynasty...
Right? What's the point of this video?
You've got the Tig setup, why not just Tig weld it? Spending all that extra money for gas, regulators, flashback arrestors, hoses, welding torches, and eye protection - seems pointless ! 🤔
We have found a gas welded seam holds up far better then a tig seam for a fuel tank because it’s flexible and strong it can hold up to the massive explosions that happen in top fuel drag racing and also just normal abuse seen in racing in general
I think you get a better grain profile within the metal and potentially a better weld there are also niche applications where TIG welding might not be an option. TIG welders give off a lot of EM and other radiation that can interfere with or harm sensitive electronics. Besides this is just educational content demonstrating how a certain process works not arguing it's the best process.
What a load of crap I was told how to do that in 1968 as a apprentice in the UK
interested in what they taught you? you don't just mean bronze brazing..?
I was taught this in the early 80's in Australia. Was a standard part of a mechanics apprenticeship back then.
@@theshed8802 for radiator repair?
@@k.c.maclachlan3227 you never saw aluminium radiators back then. They were copper or brass. Cylinder heads and panel repair, rocker covers, manifolds etc
@@theshed8802 I'm a fitter we did brazing as part of apprenticeship but even plumbers dont use gas brazing anymore. I use brazing now to repair throttle cables etc
Rad video dudes but not to be a dick. But can you dudes show the weld at the end of the video? I want to see what the weld looks like dudes.
Yeah sorry the close ups got cut but I have some over at the weld app under the welding geek
@@theweldinggeek oh, very rad dude! I just never seen a gas AL weld. I have seen gas brazed, tig, stick, mig but never a gas weld. Thanks dude.
Want to see how amazing people use gas welding check indonesian welder out .They use only propane or lpg oxygen and super cheap torch. TH-cam search the word Las aluminum and there you go.The only one thing im curious about Caucasian welder for a long time why they make it bloody hard to gas weld aluminum .Take a look around Thailand Vietnam Indonesian people all of them over there they make it for a living with super cheap torch and a lpg oxy tube.
Jacking up your liver from acetone? Does he know that we produce our own acetone? You need to use gloves on all solvents BUT acetone.
Everything was great until the cut away at the end. If you are gonna talk about it in the video then show it. Otherwise this is just another in a long line of marketing videos......
Final weld appearance, penetration, and test ? What the flux? Didnt talk about that at all. CLICKBAIT
Yeah sorry that stuff got cut but I have some close ups on my profile over on the weld app
But why not show a close up of a finished work piece??
Because the green light wasn't showing what we wanted to see
The video was okay ...but the last part flopped
I mean you've got to show a finished work piece to convince people that they can actually try this out..
But it all seems you just wanna cash out on yours adds.
Yeah that part got cut for some reason 🤷🏻♂️ I have some finished welds over on the weld app so you can see what it looks like if your curious
6 minutes of additional video WITH Matt showing the finished welds and doing a stress test. Go check out the longer video in the mobile WELD app.
Gonna try to weld my ebike back together, I wrecked bad and handlebars ripped out where the rivet is.
Not the weld the actual metal stretched and ripped.
I'd use TIG. Blue Feather Straight Grip and Pistol Grip Torches + 7 Tip Kit = $750.00
Just tig it for god sake.
Good video, but can you explain how this guy, th-cam.com/video/sZkzG0wOexI/w-d-xo.html, welds aluminum with home made rods from unusable aluminum parts and welds with oxy-acetyl without cleaning anything except after he starts heating and just scrapes the base metal with a steel rod and then starts welding with the home made aluminum rods.
T'es un amateur vu comment tu tiens ta torche lorsque tu pointes tu dois mettre du métal d'apport surtout sur l'aluminium et mettre aussi de la contrainte.
Quel intérêt de pointer au TIG et de souder au chalumeau après?
T'es un amateur vu comment tu tiens ta torche lorsque tu pointes tu dois mettre du métal d'apport surtout sur l'aluminium et mettre aussi de la contrainte.
Quel intérêt de pointer au TIG et de souder au chalumeau après?
I hold it the exact same way