One of the best things I learned from welding sheet metal like this is patience. You can't rush it. Thanks for the video!

A few things that may be helpful: - the wire is mild steel, it will not harden. Trimming it works because when you cut it with a set of dykes or most other cutters you end up with a point which concentrates the electric potential making the arc jump much more easily than from the rounded glob you get at the end of the wire. The reason that the weld bead appears to harden is that modern automotive pannels are mostly made of "high strength steel," which will hardne somewhat and that is what you're heating/welding with the wire - welds shrink as they cool, when you put your first tack in it shrinks pulling that end together and the other end apart. Try putting your first tack in the middle and you should avoid that. - thinner wire puts less heat in the weld. Flux core is available in .030" which would make this easier. - aluminum or copper backing plates make it easier if you hold them against the weld. Even better if you can clamp to them. - lowering your gun angle decreases the heat you put in the weld and some welders do much better at low power settings than others. Once tacked, you skip around like you did on the second weld, but with the smaller wire, lower gun angle, backing the weld... you should be able to get away with running 1/2"-1" or so beads instead of tacks. That will prevent the gaps that you had and still control warp.

here in my country, almost every small shop just using MMA/stick to weld everything, even 0,8mm steel plate, or 0,6mm round/hollow bar.. they usually using 6013 with 2.0 mm, and practically tack-weld everything too.. it'll be provide enough penetration since it runs at higher amps, but with some good handling, we can control the heat distribution too.. for welding thin plate, I usually start tack from the centre, and then tack at both end.. then tack it again at half distance between, half distance, half distance, until the distance between every tack just got approximately an inch.. brush every tack from any slag then continue to tack again to close the gap between every inch distance.. but keep the distance between your work, I usually skipped two-three gap when closing tack, and repeat it again after finishing a row.. for some work that doesn't need any plate to fully welded, some worker just leave those one inch distances tack with putty-work.. still, we must consider that labour cost in my country was very cheap.. most small shop worker just got 10-12 usd per day here lol.. so that's why this methods only exist in third world countries.. otherwise, we should use other time-effective methods.. anyway, you have a very good videos in your channel sir.. just subscribed #I'm sorry english wasn't my first language

Thank You! This is the EXACT video I needed!

Just came across your channel. Seriously- thanks for the tips. Brand new to welding, your videos are the most helpful I’ve seen. Appreciate your time.

Thank you for the amazing info man!!

Awesome explanation, pure pro here, thanks!

Thanks for the tip

Just wanted to say thanks for the effort 👌. I usually don't respond, but I wanted to let you know that it is helpful, especially for us amateurs, every little bit counts !!!

I was taught to do a single continuous weld between the tack welds... this makes much more sense!!!

great info. thank you for posting this.

Agreed the opposite tacks end to end do work well, add a bit of compressed air immediately after the tack and this helps against warping. More time consuming but if its worth welding like a car body panel its worth taking the extra step. Also I keep the wire waste at a minimum by not breaking off after each tack, keep a fine metal file on near by and scratch the tip of the wire on the file which opens up the tip again for the next tack. This trick has saved me a bunch of wire. I do the same when I'm stick welding. I'm not a pro. Just a regular Joe.

Excellent video, thanks GRACIAS

Great video, again.

Thanks bro for all your welding videos.

Great video. Keep up the good work

That was very helpful!

Great video it's a big help because I want to start trying to weld sheet metal with flux core

you are the best.

Brilliant video thank you 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

That anti spatter spay is amazing!!!

Did some patch panels with my cheap flux core, with results that were not great, but I did it. But now I have more rusty projects, so I ordered a small mig unit. Should make life a bit easier...

Good info and thanks!

Thanks!

Thanks!!

Vary vary helpful

If possible, depends on the situation, you can clamp aluminum blocks on both sides of the weld leaving enough room for the weld torch then weld all the way from one end to the next. Let the affected area and heat sinks cool then unclamp the sinks and the warpage should be minimal or non existent. I realize this is not always possible but when it is it will save a lot of hassle.

Super genius

WoW - your a very good Teacher - I subscribed - be checking out all your video's - thanks

Hello Again NightWrencher!!! Love and blessings from Michigan. Thanks again for your tutorial and tips. It means a lot to us beginners. I'am in the process of choosing a machine. Thinking of a dual setup that can do Mig fluxcore or (gas) and Tig for aluminum welding. Is that a good choice? Thanks

What did you set your wire speed and your voltage to on your machine for flex core welding exhaust pipe????????????

I was able to do 26ga sheet metal with my Titanium 125. It was incredibly tedious and forced me to turn my amps all the way down, but it worked for my purposes.

I started out my project with flux core on 18 and 16 gauge. Lots of heat warping . Once i went to mild steel wire and c25 it went much better .

A piece of scrap copper, I use 3/4” copper flattened with one end left like a handle as a backer if I can. That helps dissipate the heat . Works great as long as you can get at the back.

If you weld this flat on a welding table doesn't it act as a heat sync that helps decrease warpage? Thanks for the informative videos👍👍👍✌️✌️🤙🏻🙏🏻😁👌

Just do 1/4" at a time and move around to minimize warpage. The easiest way to stack dimes is one at a time. Pulse makes things stupid easy. I was stick welding 1/4 panels 40 years ago.

Good video

Thanks

For comparison it might be worth having a look at what “Bondobilly’ (might be ‘Bondo Billy’ on KZfaq) has to say about flux core welding car body panels. Similar stitching technique but 1” stick out and really hot welds.

With flux core i haad to weld a thin panel on a vw beetle. Placed a soaking wet rag behind the panel to act as heat sink to prevent burn through. 🔥 tshhh

quick question, i cant remember the specifics, but i thought i read somewhere that some wire (or certain situations maybe?) you cannot weld over your previous weld. is there truth behind that? can you explain? thanks

Ever try a torch? Think Dulcich uses old school method. I love torch welding.

I'm a bit lost here, so it seemed as if both ways were a fail if I understand correctly? The 1st was warped and 2nd didn't penetrate correct? Thank you for your time

As you progress with the weld bead, use hammer and dolly to flatten it out, as you go, or if you try straighten it at the end you'll have a lot harder time trying to straighten it.

Hello and thank you for the video. Great explanation throughout. Question though, regarding the second method... "You've got to pick your poison" you said, @ 9:15 you can clearly see the crevice between the two sheets on the back side, won't this be a perfect spot for moisture to hide thus starting a premature failure... in other words, on a body panel this welding technique will fail in a short time, will it not ?

11 views and I'm the first 👍, Man, this youtube a tough crowd. 😆💪

👍

Hi nice video. I am a welding learner and english learner. English is not my mother tongue and i was able to understand 90% of what you said. Where is your accent from ? Thanks dude

All your videos are well explained!You should advertise welding lessons for beginners and make a little $$$

I. Been welder on a truck cab that was choped and the person had just taken weld holden tighter I got a harbor freight welder cheap on I can't figure it out on low or hi heat keep maken it worse on welder it burned bigger holes haven a heck of a time

Any recommendation on Voltage, Wire speed and Current for flux core welding on thin metal(1mm-1.5mm)? , what’s your settings on this demonstration?

What brand wire are you using

1mm E6013 works well also

Will an aluminum heat sink help prevent warpage?

What's the name of the circular gadget you put on the sheet metal?

What guage wire are you using?

How about intentionally gapping slightly, then spot weld?

Planisher it flat when you are done

😊

👍👍👍👍👍👍👍👍👍🙋‍♂️🙋‍♂️🙋‍♂️

A regular Joe explaining how a regular Joe should do it.

You dont need to break any wire off just give the tip/wire a rub on your work piece is all thats needed it works every time

Take the tip off the wire was new to me.

welded sheet metal for 15 years.... if you can, avoid flux core, it goes way too deep. MIG or TIG is the way to go.

Actually?

Hello friend Where U buy your jacket & what do U call it . Thank you for sharing your knowledge . GOD bless 😇 + 🕯♾️ 👏👍󾓦 ✟✟✟✡✟✟✟ 󾓦 4/17/ 22

Don't do it like this unless you want your body panels to look like the ocean

Please take " go ahead" out of you vocabulary, but very good.

why did you go over the old weld? It made that side thicker and full of rubbish. It should be ground back ffs.

Why do Americans say “gonna go ahead and…” all the time. PLEASE STOP!

If you can’t weld a straight beat in one pass on 24-20 gauge you shouldn’t be doing video educating others. Tacking a beat is not a strong bond on the metal. Unless you wire brush each tac before putting another. That would be dumb. But that would assure the weld fuse together better. You can check out my uncle at weld tips and tricks channel on KZfaq. You might learn something and do a video.

That was one of the worst beads I have ever seen