How To Weld Thin Metal Using Flux Core Gasless Welder | Flux Core Welding Tips And Tricks |
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- Опубліковано 6 лют 2025
- The week we are going over how to weld thin metal like exhaust systems and turbo manifolds. The concept is actually fairly simple and you could be welding like a pro in no time. The process starts by getting your welder on the lowest settings and get your metal nice and clean. Butt up the pieces as close as you can to each other and close the gaps as much as possible. Tack weld the part in several places in order to keep the part stable and solid. Tacks should be started on one part of the base metal and then bridged to the second base metal that you are trying to bond. Because flux core wire is harder to get flowing, you'll need to tack all the way around or youll risk overheating the part. Once the part is completely bonded, you should be able to make a second pass right on top if you need to. Practice makes perfect and the only way to start getting better is to start doing more. Good Luck!
How To Weld Thin Metal Using Flux Core Gasless Wire | Flux Core Welding Tips And Tricks
#fluxcore #welding #weldingtips
In today's episode of how to learn flux core welding for beginners, I cut up some pieces of scrap steel to show you guys the drawbacks of welding on rusty dirty metal. The process is not too different from welding on your own with clean metal, but it does take some precautions. Follow along this short video so you can learn what to expect when welding rusty and dirty metals.
The video had to be shot completely 3 times over because I could not get all the info to fit in a tiny video. Flux core welding is relatively cheap and easy to do, plus you don't need anything fancy to do what you need to get done. Today I'll be showing you guys how to set up your welder for welding with flux core. Although getting the hang of your hand control is the biggest issue with bad welds, the rest will fall on setting up the machine settings for flux core as well. Please remember that these machines have to be set up with electrode positive.
#fluxcorewelding #howtoweld #gasslesswelding
his is another long one fellas. Way too many of you guys are asking about this so instead of replying to each of you one at a time I'm just going to link this video for you and hopefully it helps out your flux core welding. I might become a flux core welding channel pretty soon lmao. Basically in the video I show you guys how to take a regular gasless welder and use it to weld upwards or vertical. Once you get the hang of it, its not that hard so as long as you keep trying, it should all work out!
How To Weld Flux Core Vertical Or Upwards For Beginners | Gasless Welding Tips and Tricks |
Several people thought the flux core process was weak and dirty so this video is to basically test to see how well the welding process actually works. Settings are the same as last time and the welder is a vulcan omnipro 220 welder from harbor freight tools. Let me know if there are any other videos you guys want to see about welding and welding accessories.
How Strong Is Flux Core Welding? | Gasless Flux Core Welding For Beginners Tips And Tricks |
Learn how to take your basic welding skills to the next level with 5 easy things your can do to have better performing welds in less than 10 mins. I go through 5 easy ways to weld flux core wire and make it look like gas mig welds. You can take these tips and tricks to better your hand control and finally get the welding results you are looking for. Flux core welding for beginners is the best way to learn how to make clean and concise welds with just a little bit of effort. It only takes a little bit of practice and you will be welding like a pro in no time at all. Tools used in the video are the vulcan 220 welder from harbor freight. Slag hammer from harbor freight. Tig welding gloves from harbor freight and Lincoln flux core welding wire size .030.
Learn Perfect Flux Core Welds In 10 Mins | Gasless Flux Core Welding For Beginners Tips And Tricks |
Finally someone who explains how to weld thin wall metal. Your the man! Thanks so much
Thank you! I really appreciate it!
Watch Fitzee's Fabrications. He does a lot of bady work with 20-18 ga. I've welded quite a bit on my Jeep thanks to him.
Don't do this
Some people are just born to be great teachers. You’re one of them.
Thanks man, the means a lot! 👍
I'm self taught, which means I'm horrible with thin wall, until I watched this.. I was beveling and blowing through nonstop, watched this and boom, my blow through problem solved.. thanks man.
Thats awesome! I'm happy its working for you!
You've got a great teacher.He patiently and gracefully teaches you everything from fabrication to welding.All the teachers who taught us while we were studying were very strict with us.Watching this video reminds our study time AWESOME
I’m glad as a non taught welder that when I watch videos like these teaching you that I’m doing things right or at least have the right ideas and directions to make my welds the best. How you explained is exactly how I did my exhaust with flux core. Thanx man
Thats awesome!
@@NightWrencher what's the exact amp, dials and the name of the flux used for thin metal? I need to build a exhaust for a generator so it's even thinner than your car exhaust pipe.
@@BOREDANDWELLBOREDif it is even thinner, you might be better off with oxy acetylene and soldering.
@@BOREDANDWELLBORED❤😂😮
Kinda like you mate. Did some body work on my car. The thinnest plate was like 1/6... Put the welding in 13v/30-40A and minimum inductance. I tacked the corners, run a spot like on both edges to get'em closer together (I had ~1/10 missing) and then started the same spot weld technique but on the puddle in the middle and doing it much faster. Maybe I'll help someone.
Key when welding exhausts is to weld onto weld. I.E stick a weld onto the old material both sides, not trying to join anything - then join your welds to each other. Once you get even a tiny bit joined - no matter how big the gap is - keep welding onto your weld, ignore the base metal. Weld onto weld. Using a long C as your weld pattern works great - just keep laying one C onto the next C, working around the whole pipe. The benefit of using big C's is when you're done, it looks real pretty too. :-) Like stacking dimes.
Thats what I do too. welding in a C is uncommon in other welding processes but for flux core it works great
@@NightWrencher Flux core is also waaay better for "spot welds" - I.E plug welds to join panels. More especially so if you are using weld-through primer. Gas mig will sulk & spit, flux core will weld ahead & with better penetration. Filling big voids is also fast & easy with flux, plus it cares a lot less about "perfect" metal preparation.
After 20 videos, I finally found what I was after. Great video!
Thanks man, I hope it helps!
Very helpful video, I have a cheap (£100) gassless mig welder and I've been attempting to weld some thin metal pipes and blowing holes straight through, this vid clearly explains the correct procedure and concept
I expect this is not the only bit of wisdom this young man has to offer. Darn right I’ll subscribe
Thank you! I really appreciate it!
I just started welding. I'm currently restoring a 1973 Jaguar XJ12 and the exhaust was TOAST. Your instructional videos have helped me tremendously.
Thats awesome man! I hope your restoration goes well!
Finally some real world welding help. Enough right on the money advice for a common sense person to do the job. First time using a yard sale mig and every single video I watched just made me panic. there was no way this was going to work. Every bad thing you described might happen did on my first try. Did what you said without cleaning anything once I started. Then hit it with the grinder once it was all put together. After that it was easy to make it all pretty just like the other videos show you. Thanks
Glad it helped!
Awesome video! This is the way. I've been welding exhaust with flux core for years. It's not show quality, but I've never had one come back, and my welds outlast the parts welded together.
Ive watched heaps of these vids on youtube, this is the easiest to understand.
Thank you! Hope it helps!
This honestly made so much sense to me. I’ve been experiencing most of the issues you talked about here and I figured a few of these issues out on my own the extra input from you deff helped me thanks man.
Thats awesome man, I hope you get it
What brand mig welder do u use ?
Your videos on thin metal wielding are very helpful. We all think you for your presentations
I appreciate it! You're welcome!
The best budget friendly, practical, just get it done coz it ain't for Instagram, beginners mig welding video I've seen. Thanks !
Thats what flux core is for!
Welded piece of 16 gauge to fill a hole l created today.
Got it done but I wish I had seen this earlier today cause I would grind down the weld then get cracks or see a hole start to form, reweld and do it all over again.
Great video !
Seems like good input. I love how with UA-cam i can watch multiple videos and accumulate the highlights of each one to approach something new with confidence like welding
Exactly right!
@@NightWrencher did u ever do heat shields? I was thinking to tack hex head machined screws like cookies to a sheet metal sheet and cutting squares to tack them to the car body.
Any tips on tacking to the body? Where should i ground.
I got 2 shields to do with the exhaust repair
That can work, you can ground on any clean piece of metal on the body but you need to make sure the battery is disconnected and any computer is unhooked from the ground to prevent damage
@@NightWrencher okay i gotta do the exhaust this week so ill do the shields. I honestly wouldnt of disconnected the battery or the ecu but i will now. Makes sense to play safe. Thanks for liking my comment so i could ask this
Did not know I can ground the cable to the angle iron thank you for your knowledge and experience
As long as you have a clean ground to a metal surface that touches your metal, you can have the ground anywhere!
I went 15y ago to a 2 week welding course.
Now on youtube in 2 evenings watching for only few hours I learned a lot more. Thank you and your fellow creators. i needed to do a few repairs at home and now will use it also for more things
Just use a coat hanger as a filler rod as you weld the seam with your wire feed welder. Lay the coat hanger along the seam and strike your arc on the coat hanger instead of on the thinned exhaust pipe. Works like a charm when welding thin metal, you ought to give it a try.
.
Thats really interesting! I'll try it!
@@NightWrencher : Had my own bodyshop for years prior to retirement, works like a charm.
.
@The globe is DEAD how about using flux core wire? I have lots lying around that are left when changing spools.
@@UnleadedPadyak : I know that well, lots of useless flux core 6’ long. The coat hanger is larger diameter, the arc blows the flux core wire away like thin metal, too small. It’s a shame because it would be a great way of using up those worthless scraps of flux core.
.
@@ATinyPillow so what if you wrap several pieces of flux making it larger diameter?
Very well explained. As an amateur welder I have come to the same conclusions as explained in this video. All the tips are important.
Thank you! I appreciate it!
Good tips! Another method to welding super thin material is tack welding it 100% with all tacks over lapping 50% or run small beads 1 at a time then cool with air and continue on until joint filled!
Exactly! Very tedious but it works!
My man, thank you, finally a thorough explanation on welding thin metal. Whether it be speed and size etc. Thank you!! 💯
Thank you! I appreciate it!
You have to clean the slag off between each layer. The tack method is a good idea, but clean it before your next pass.
That depends on the consumables used tbh. What he did was a "stitch weld" and you see that on auto body metals a lot. Cleaning slag is more important for thicker metal. If you have a wire that puts out next to no slag, like some do, and if your weld pool isn't getting too cold before the next stitch, then you won't see slag traps as much or at all
I just got started with flux core, 9+ times out of 10 I find the slag flakes off spontaneously on cooling, on rare occasions some gets a bit of purchase but welding on top of it seems to just melt it and add it to the pool. No inclusions yet. I'm absolutely hooked now, never suspected flux core would be so much fun.
@@lucasblizzard7261 says right in the title flux core, one of it's characteristics is leaving a layer of slag. Regardless of what welding procedure you are using you should always clean the weld between passes.
@@idabomb00 I'm a welder
One question to ya all i have 0.30 wire and i need it fo car bodie panels 1 mm .will i ger better results if i buy thiner wire 0.30 is 0.8 mm and i can put thinner wire 0.6 mm
"Drag it into the void". Thanks, I needed a cool name for my band...
But seriously, I recently got a small flux core MIG from the Harbor Frought and it's way different from the 480V welders at work, so this helped a lot...
very useful information. will help a lot of people. you guy's gotta go ahead and actually essentially take it easy with the UA-cam lingo though. at least I didn't hear smash the like button, or hit that bell, or the link is in the description. but anyway, thanks for uploading and helping others, it takes time and allot of extra effort. Great tips, all on point.
It takes me an hour per minute of video posted so it is indeed a lot of work! Thank you!
Just learning how to weld and my first job is exhaust on my project truck. I've been practicing on the old exhaust that I cut off and I've been burning through it and doing basically everything you said would happen. This video was a huge help. I can't wait to get home and try again.. Thanks!
Thank you...that is what i needed to hear. I am a bit of a challenged welder,and i am building a drift trike with some friends and i was turning it into swiss cheese...lol...so thank youbagain
Hope it works out!
This video makes tons of sense. Thank you so much. I am using a Lincoln electric quick weld 110 and trying to make it work but so far it has been ugly. I will try to employ your guidance and see if I can make something decent with this machine. Thanks again!
I made my own pie cut exhaust, welded it with flux core. It looks awful, and my choice of crossover and "muffler" make it quite loud... I used an x pipe and a 2-in-2-out cherry bomb extreme "muffler" with a pair of pie cut turndown tips. Ahead of the Xpipe, I have a pair of high-flow mini cats(1 for each bank). This is all on my 1996 Audi A4 Quattro; 2.8L 12V V6. I've got essentially the whole process I took on my UA-cam channel under "Community" and I uploaded the 2 takes of me starting it after the exhaust was done. I tell a story better using pictures over a longer time vs videos... my ADHD can't handle that added difficulty setting(I lose enough tools as I'm working, I can't imagine the things I say being recorded lmao). Thanks for your tips, I will definitely keep them in mind next time I weld exhaust.
I built both turbo manifolds for my projects with a Lincoln flux core machine. The second obviously turned out better cause the learning is the fun part.
I know exactly what you mean XD
Thanks for this tip I am a beginner welder and self taught welder so this tip really helps me!
Good luck man! All it takes is practice!
Wish I had seen this 3 days ago. Was building an exhaust for my 78 Case 446 using the flange and first six inches of stock exhaust, and adding tubing to that. Big paper thin. Had to fill in more holes than I can count where it blew through
That rough man, I know the feeling, its a pain. Once you blow through, you tend to keep doing it and it gets worse and worse
Well done, you explained the procedure very well.
Haven't heard anyone recommend this yet. I've been having issues blowing through .065 tubing so I'm going to try this!
Game changer when welding body panels.
Once you know all the tricks, fluxcore becomes invaluable.
Picked up a welder and starting practicing, thanks for the video
super helpful guidance for how to weld thin materials...thanks NWrencher
I appreciate it!
I’ve found that stick out length can greatly help with bridging less than ideal gaps on thinner gauge steel on gasless wire
There's a lot of little tricks, maybe I'll do a video on it on of these days.
Very good information. Way better than your half drunk neighbor who has a harbor freight welder and that makes him a aerospace grade underwater pipeline welder. Hid welds look like a piece of swiss cheese got in a fight with a porcupine, holes and wire everywhere.hahaha. But seriously that guy lives near my house.
Notice the wait he takes between each weld to when filling the gap? In my (year of) experience, that's because if you run for too long on really thin metals it'll melt through. Fight your stick welding urges until you've put in the root, then go back over it. It's just going to have to be ugly as sin the first time through.
Exactly right!
I FOUND THIS REALLY HELPFUL & INFORMATIVE, THANKYOU SO MUCH !!
I can't thank you enough for sharing this video. Great tips !!! This is a video to save !!! Keep up the great videos... Please !!!
Thanks Scott! I appreciate it!
Excellent video. This information is exactly what I was looking for regarding flux core. Thank you.
Thank you! I hope it helps!
@@NightWrencher ipĺp
@@NightWrencher More than you can imagine. I just found my Land Rover exhaust has come apart at a flange. The metal looks good, it just looks like the manufacturer was very shy when welding on the flange and the two have parted company. I think I will mark up the alignment, take the pipe off and redo the flange weld. If it works the system should last me a few more years as the pipes all look fine.
I've had to the same thing on rusty subaru exhaust and as long as you go wide, you should be ok. The broken ends will be very thin
@@NightWrencher Thanks for the advice. I will double check, but it doesnt look broken at first look, it seems to have just pulled out of the flange. Maybe it was only tacked. If I have to buy a new mid pipe its not a big issue. Thanks again.
Super descriptive video, appreciate it man! Just bought my own flux core welder that I’m going to be learning on
Good luck! Its all just practice!
@@NightWrencher 💪🏼💯
In the old days , we used to learn oxy acetylene welding , this is the right situation for this . Much better control of the heat issue .
I believe even exhaust shops use smaller .023 etc mig if possible. Like doing body panels. Spot welding not running beads on your first pass just like you mentioned.
I feel this, i personally like to chip every tack if i weld that way so i dint have an slag inclusion and am able to have a stronger weld
I had to turn wire speed up and heat down and increase travel speed... worked pretty good
I love this kind of video. Super helpful and informative. THANK YOU!
I really appreciate it! Thank you!
Thanks, going to check out the flux core playlist!
Awesome! Hope it works out for you!
@@NightWrencher Thanks, I need all the welding tips and help I can get!
A lot of great tips NW. I haven't welded any exhausts yet but will definitely use these tips when needed. Thanks for sharing and take care!
Thank you! Always a pleasure 👍
If you've never done it before it is tough. So easy to blow through. This video has enlightened me, after having made all of the mistakes
This was very helpful. I'm about to weld a test pipe together using a new exhaust piece on some old flanges that I will sand blast.
thank you, man! you are an excellent welder I need to learn A LITTLE.
Practice makes perfect 👍
Great video you just helped me a lot on a little trouble I've had before thanks
Thanks man, hope it works out!
Than you for this as it really will help .. can you advise me what wire to use as I wish to buy gas less and weld my exhaust and my bike frame aswell .. many thanks
Hey man, if you want to switch to gasless welding you will need a roll of lincoln innershield wire, prefferably .030 because thats the thinnest you can get for flux core
Very helpful clear explanation. Thanks for making this video.
Thank you! I hope it helped you!
Real good practical advice my guy. Will go back to garage and use it right away. Todays practice welds got me real depressed haha
Running electrode negative is a must and changes the game.
Verry good tips! Thank You for sharing. 👍
There are more videos to come so I hope you enjoy!
Great video and it's perfect as I have to fix my exhaust tomorrow
Thanks for the tips
Hope it helps!
Helps if you brush off the flux, brush off slag and cut the end of your wire between welds. It sucks having to do this, but might help for prettier welds.
Thanks for the excellent video! Very specific, clear and complete! Awesome!
I would also imagine the wire you use has to be rated for multi-pass use. I believe the Lincoln wire is rated as such, but Vulcan and many others are not. Excellent tips. Thanks.
Great video so much to learn i am new to welding and this makes so much sense
Brilliant way to explain how weld a rotty exhaust. 👌
Gotta work with what we have! We cant all afford titanium tig welded exhaust XD
@@NightWrencher I can appreciate your skills 👍
I learned a few things here. Thanks.
I hope it helps!
can you please do a vid on patching holes in thin sheet metal (e.g. 18 gauge) using flux core?
Its coming up 👍
It is possible to put passes in the butt joint. Just takes practice. It doesn’t always require tacking the full split first.
It depends on the wire size. Thinner wire helps a great deal.
Thank you been searching and searching so rad thank you again
Hope it helps!
You did a great job giving information. Your tips will help me improve. Thank You!!
Thank you! I hope it helps!
yes indeed. I couldn't find a muffler for my sentra 2005 with correct size pipe. Had to make repairs myself, welding old one back on. had to spot weld and then build on top of that.
Glad you were able to fix it!
I grab old exh pipe from the local garage dumpster, cut 2 inches off, clean it and weld it back, get tons of practice.
dial the machine way down low as possible for flux core. It runs hotter than gas.
Thank you for this video! Something I've been struggling with. Will attempt to improve!
Good luck! I hope it helps!
Always appreciate your welding videos. Great tips, thank you.
Thank you! Have a new one coming up soon!
Your a great listener, and/or someone was a great teacher! Great video very educational! Thank you for your time! I learned more here then I did in my 8th grade small engine repair class… lol you know what I mean.
Thank you! That means a lot! I try to explain like I like to learn. I assume the person listening doesn't know anything so I try to explain as clearly as I can and cut out all the real technical stuff because its not useful to them at this level.
Great video series! I know I'll be referencing back to many of them.
I really appreciate it! More to come soon!
Great video. Good advice obviously from experience. Ty
100% well done and well explained.
Well explained, great video 😁💪🏼👍🏼
I wish I had seen this video a few months ago when I built my exhaust and decided to weld it all together. I kept blowing holes in the pipe like crazy so I abandoned the welding and used band clamps.
I did the same thing! Ha.
It happens to all of us!
Nobody wants to talk about welding thin rusty metal… lol But that’s real life shit you might have to fix. It ain’t pretty but you can make it work. Great video man…👍🏼
When you were starting on top of the weld and draging into the void over and over, I never saw you chip or brush any slag before the many restarts. Didn't the flux leave slag where you restarted? How did you prevent slag inclusion?
I'm trying to learn. Thanks.
You only need to worry about that if its something structual like a building or chassis. When doing exhaust work, fabricating brackets or even body work. The small inclusions don't matter. This is all to help you do DIY stuff. In a professional setting, they use gas welders or dual shield wire which is a different ball game entirely.
I really like the idea of going right over the weld to really pull it all together! Thanks for the video!
Awesome information brother.
Soaking up all the information you give us. Nothing but respect brother.
Thank you sir! I really appreciate it!
Really good video bro just what I needed when I needed it. Thanks again
Thank you! I hope it helps you out!
Thx for the lesson .
Hope it helps!
Now that there is some very useful information. Thanks! 😀
Thank you! Much appreciated!
Just curious as to whether or not you're using flux core welding. Shouldn't you clean off the slag before welding to the weld? I've heard that if you don't clean the slag it makes the weld weak. Just curious. I'm just trying to learn welding and most videos edit the actual welding. I've noticed they never show exactly how long to actually weld before stopping to let it cool down. However I think your video actually showed you doing the welding. No editing on the welding itself like fast forwarding while welding do ppl can see exactly how long to weld so we don't blow a hole in the material we're welding. Great job
Yes, I'm using flux core and yes you should clean off the weld before continuing. With that being said, exhaust is so thin, you'll be able to get good penetration and strong welds even if you don't clean the welder after each pass. My whole turbo system is welded like that and its more than strong enough with zero leaks.
I legit just sat down after putting in some practice and this vid popped up soon as i opened youtube. This helpbreak the fog I my head why i was having a hard time. I was doing great on think metal but was confused when trying on sone old pipe now i get it. Thank you
Thanks for this great video.
Thank you! I appreciate it!
Thanks for the video. I need all the help i can get. I'm a newbie but my welds look like helen keller did them after a fifth of jack daniels
Thanks man! I hope it worked out for you!
Thanks welder brother 💥💪🏾
👊 hope it helps!
What's your welding machine settings for exhaust pipe wire speed and voltage ???????????
Good information!! Will stick welding work for body panels? I know tig is the correct way to go for body panels but curious if stick would work? Thanks
I don't think hardly any uses tig for body panels unless its really high end body work. Ideally you'd want to use mig wire and gas for body work. Minimal spatter and head distortion. Flux core works too but its not as forgiving as mig and also theres more clean up. Stick, I would not attempt unless you're really really good. Compare trying to melt a .025" thick wire to a .125 " rod. Itll take more heat to get it going and flowing. For body work, I would not recomment
@@NightWrencher thank you, I appreciate it!!
This was helpful information thank you sir.
Much appreciated!
Great information, helped heaps to get a nice weld. One thing with the video, have the program treat the audio as a mono track and it'll fix the odd panning issue. Thanks, hope to see more :)
Thats a great tip! Thank you!
Awesome video. Thanks for the tips. Beginner and looking for all the info I can get to help along the way
Thanks you! I hope it helps you out!