Capillary action is the term I was looking for, that pulls the WD-40 between the layers of steel.

Criminally underrated video and channel.

I have often wondered about using 10w-40 since it was mentioned on Forged in Fire - thanks for makeing this video and proving it to be effective.

Well i use WD-40 on cleaning the blade but never thought that WD-40 could weld thankyou im going to try this thx mate 👍

I've done this. ITs worked. But it was only a san mai and a 5 layer. Oh and tie wired them not welded lol great video

I will try wd 40 today better than rebuilding your forge Thank you great video

Surface tension-capillary action, same thing.

I think I'll give this a try. I actually did my first forge weld today. It was pretty awesome!

Very cool video. You make it look easy.

I use WD-40 to forge weld, it work's the best in my opinion. It hasn't failed me yet & doesn't leave my forge all sticky.

That looks really good!! It’s going to be a nice knife!!

Just inherited a William Forester coach maker anvil guessing about 90 lbs and a round pan forge with a champion hand crank blower, was frozen up but only took some WD-40 and gently played with it and she freed right up. Made a tri legged stand for the anvil and got to use them both today.

Interesting...enjoy your weekend. Stay safe my friend!

Awesome to know! I heard about this but never tried it. And just found your channel and it’s awesome!

Very well done!

Brilliant, just came across your video. Would be so much cleaner and also not destroy my gas forge .Thanks for the demo.

Thank you this is very helpful!

heating up wd-40 is increadibly dangerous seeing as the material safety data sheet states Thermal decomposition will release hydrogen fluoride, carbon monoxide and phosgene and with phosgene being a deadly gas it does not seem like a good idea

wd 40 is a hydrocarbon, and is comprised of around a third kerosene. when this burns it leaves carbon on the surface fighting the oxidizing(scaling) process. Also, carbon lowers the melting temp of steel, which is why it can forge weld at a lower temp without borax. using a carburizing flame also helps this process. flux sux

that was cool. thought it was a bit click bait but it worked. nice to know in a pinch or as borax is something one has to search to find here in Sweden if I run out.

I usually use kerosene, I’ve never tried wd. I learned the kerosene trick from Jim pore world renowned shoer

Forge welding with WD-40 I would have never thought of that one! Good job man, I agree probably not the best thing to be breathing though! At least you don't have borax all over the floor of your forge though

Cool man,Thanks!

I've been using a borax/fluorspar mix for 20-odd years but I may just want to give this a try. Not running short on fluorspar, just curious. Won't try it on anything important, though, my rule of life is first try at anything I will f**k up something.

"Pocket"... Delamination is the word. And also you can forge weld without flux of any kind if you have a decent smooth grind on the planar surfaces of the stacked metals, and if you have your forge burning relatively neutral - meaning you are supplying enough oxygen to your propane flame to get hot without having an excess of oxygen. Too oxidizing, you get oxidized and burned metal, too rich or "reducing" of a mixture and you are generating water as a product of the flame. Keeping the forge sealed off as you have done is probably what gave you success. If you leave the brick open on the end you will be seeing "dragons breath" coming out. If you notice you will see the fire fluctuating in whooshes which any forge will do while open ended; on the flame drop it is drawing air in that has no fuel to mix with and will oxidize your work piece, then the whoosh outward is the expulsion of heat. Standard draft properties. The rough definition of wind is "the atmospheric effect created by uneven heating of a medium." You get the idea

Capillary action is the term you were searching for

Why anyone more use This method? Is soooo AWESOME !

That's really cool thank you. I've heard of using flux and sand but never WD-40. That's an excellent job grinding also. I'm so bad at it I try to forge it out as much as I can. did you use a guide on the plunge line?

Awesome! I've used kerosene before with good result. Thank you!

hey man just curious what PSI you're running to reach forge welding temp? my forge looks very similar, im running a frosty T burner and trying to tune it. I don't have the forge lined with anything maybe that's my issue? Keep up the good work!

Here's an idea for showing what steal is what color in the etch: make a billet from lowest carbon to highest, then add in the exotics. And then the end grain pattern should be a quick reference guide.

Hey man i found it....but I got sidetracked in between lol taking advantage of days off to get caught up around my place. Did you make a video of the finished knife? I bet it came out beautifully

No flux used. WD 40 is good👍👍👍

Is it Cappilliary action what you were referring to ?

What kind of belt grinder/sander is that that you’re using starting at around 7:15? I need something like that

I usually use wd40 to dissolve my borax before bringing billet to heat. I’ve had great results.

I’ve seen people use diesel

I don't think it is the nickel in the steel reacting to heat that you can barely see it when it's not etched because I made a 1095/ mild steel san mai and could barely see the layers and as far as I know neither of those have much nickel

I am interested in knowing what brand of forge you normally use low use.

Would this work with Diesel as well?

What pressure do you run your propane at to forge weld?

Capillary action

I have heard from an old timer but never tried it, to dip the stacked billet into a bucket of kerosene before the first heat. Seems to me about the same thing as your doing? Anyone else try this?

there is water in WD-40 right

Sans borax merci

Capillary effect

and today we'r gana fire weld without flux using the process of getting good flux is for Americans or important structural welds

Es una pena que no esté en español

There is a guy I can't remember what country he is in but he uses diesel fuel

Seems weird to clean it to just cover it in oily wd 40

Not spot welded... Spot welding is using high current between two electrodes that are pinching metal together and fusing them. It uses no rod filament nor flux