-How much current do you want in the secondary? -Yes.

your welding probes kinda look like little hands giving the sheet metal the middle finger...I love it..

This actually worked out better than I expected. I do love how unimpressed your cat was with that first weld lol...

I started loving graphs and tables after joining this channel.

Remember that it is not good to breathe in the fumes from galvanized material. I did work as a factory mig/tig welder and it was adviced to use extra ventilation when doing that when repairing someone others construction fault that had gone into galvanzation already, things that was measured wrongly on the drawing board and had to be done again. The weld also wont stick as good when it is galvanzation or paint in between there so use a angle grinder and clean it up to bare metal before you weld and it will stick much better :) We also had a spot welder there and it had a foot switch like you mention, and it had replaceable copper rods as contact points to spot weld metal plates. Becourse copper wont stick to steel. Actually you can use a thicker copper plate and fill in with weld if you have a steel plate with a hole in it that needs to be filled, it will save half the grinding needed afterwards, yeah, this is for using a mig welder, not spotwelder. They learned me all kinds of techniques there. But just to give a understanding on how copper works when welding. Also the wire nozzle on a mig welder is made of copper beourse of that.

diode gone wild has the most criminally undersubscribed channel on youtube, this guy deserves ten times the subscribers, i cant afford patreon for him but i do try and get others to subscribe, either through patreon or youtube, please do all you can to support this incredible content provider

Oh my gosh, I've started to get worried about your vanish, specially because you've been working with MOTs. :)

Ive been watching a ton of Photonicinduction and you upload this like a mindreader or something

glad I became patreon and your alive!

That was a LONGGGGGGG time. Happy to see you back :)

Been looking for this video every day since the last one

I'm happy to see you back Diode Gone Wild its been long time.

Men I though lt u died of shock .was waiting from weeks for part 2.thanx god ur safe and alive😃

I have a similar thing and I made a small timer to time the spot welds. Turning it off rather than just removing the electrodes is (allegedly) important to keep pressure on the welds after completing them. To switch the transformer I used a zero-cross switching SSR to stop it from blowing the fuse, not the cheapest solution but very easy.

Ah yes, the universal thermal insulation: sandpaper. BTW would it be possible to use graphite electrodes from carbon-zinc batteries?

Přepis do překladače pro lamy, jako jsem já ;) i may try to remove the magnetic shunts. Than the secondary voltage won't drop that much. But i can only do this in combination with less turns on the secondary, otherwise the primary current would be too high and it would trip my circuit breaker. less turns on the secondary means a higher ratio of the secondary current to the primary current. ideally, the secondary voltage shouldn't drop below 1/2 of the open circuit voltage. The voltage drops partially resistively (on the resistance of the primary and secondary), heating the windings, and partitially inductively (because of the magnetic shunts and the leakage inductance). But in both casses, the more the secondary voltage drops under the load, the less effeciently you're using the curent aviable from your circuit breaker.

Really nice! I was surpriced at first about the thick wire from an old TV (because there is no need to handle high currents in those) - then I got it, haha (it was actually one of the typical wide coils used for CRTs, that's cut up to get one turn of many parallel wires - smart idea). Also, well explained, how to get maximum power out from the transformer.

9:40 u can take about 20 groups of wires , and put your current-meter into only one group , others groups will be shunt-like. multiply measurement x20 and result is ready !

You can modify the eeprom of that current clamp to go up to 600A. I have the Uni-T version of it. I believe they are the same exact chipset.

I suppose I wasn't the only one worried about his silence. But now: NiiiiiiiCE

I have done quite a lot of spot welding and one of the most important part is the alignment of the electrodes and the clamping pressure. It’s a good project to build a home spot welder as they are expensive.

It's becoming more difficult to find scrap wire of any quality these days. Modern devices certainly don't have any good wire anymore. It also feels like more and more stuff is using CCA vs pure copper these days. Ohh well.

12:10 that is a very useful finding, that the maximum power is reached when the voltage drops to half. if the car battery drops to 6V when starting, then it simply cannot deliver any more power.

As you already know, Koptan is a fake Kapton tape, and the characterictics are worse. It does not support high temperature like genuine Kapton and is dangerous. But it may be part of the show, of course.

Ahoj, díky, tohle je snad nejlepší video co kdy kdo natočil ohledně bodového sváření pomocí MOT 👍👍👍

Very Beautiful Video Sir. I learnt some next level stuff from the above video. Thanks alott sir for your work. Please keep uploading such videos

Great video! I have never seen the loading effects on the transformer efficiency explained in this manner...

I put "some random solder on it" more like you "emptied your whole tin lol

Maybe you could try to add some capacitors at the primary to improve the power factor when welding to reduce the chance of tripping the breaker? Not sure how much the inductive current actually is here, but it might help a little bit at least.

I like how many decimal places you use for the 0.666v measurement

Hey, your spot-welded leads are showing middle finger...Lol(on thumbnail)

Fascinating. Thanks for posting.

I (who knows next to nothing!) have been buzzed pretty good on a 12Vdc car battery. I must have just got a REALLY good connection. It reminded me of getting a poor connection/zap from 110 line voltage. It was a good enough Buzz that I now treat those dang little acid-boxes with a little more respect :) On the other hand (pun).. you are the Magic Man and the original Count Voltar the Incredible and the hardware looks out for YOU. So dig that my friend!

5:32 Hey Diode, yo You know that this mains plug You're using is rated only for 16A, not 24A :D

If you get the chance Danyk can you talk about possible over current protection used in retail welder circuits to avoid tripping the circuit breaker and maybe mention some rudimentary ways to deal with the transient spikes? I recently started messing with a U2010B based universal motor controller circuit and came across a dilemma that seems like your area of expertise. How can I calculate a transient suppression rc snubber for a universal motor when I do not have its specifications and my 50MHz scope is not fast enough (5ns) to monitor the spike? As far as I know the 100R/100nF default values are sufficient. If I can't see the spike it must not be there! Lol. The chip already failed once and I haven't discovered the culprit yet. I'd rather have a theoretically ideal RC value to use but I have no idea how to come up with the equivalent inductance of the motor to plug into: E=0.5 * L * I^2 ...to come up with the joules for the RC values.

Just seen an advertisement on eBay using the thumbnail of this specific video, selling a so-called "VoltBox" to save energy (probably because it kills you). I immediately knew where the image was from.

A very efficient way to remove the laquer from those wires is to dip them in a hot concentrated solution of sodium or potassium hydroxide. Very dangerouuuus, of course, but the cat would love it (watching it from a save distance, od course²).

It actually makes it even more efficient as with AC the current only flows in the skin of the wire. Having multiple parallel isolated strands makes it possible for the current to flow on the surface of all conductors, leaving you with a lower impedance!

Someone is using a screen shot of this transformer for adverts for energy saving.

You are the best my friend! :D :D Always fun time watching your experiments!

Can you please make a video about your AC power measurement extension board as the commercial power meters are quite expensive here.

You've got cool stuff Dude 👍

Thanks a lot. I'm working on my own spot welder

lots of good fun thanks for the excellent explanation of impedance matching

Try with electrodes on opposite side, but apart from each other. Thus forcing current trough both layers.

You can pretty easily modify that meter to read up to 1,000 amps... There is a tutorial on KZfaq and a forum called the EEV blog that has detailed instructions and multiple methods Edit: the instructions are for the UT 210E... Which is the same model that you have, only with a different name

very good analysis

Polyimide films can handle VERY high temperatures. They also don't outgas so they are used in high vacuum chambers.

I like the idea of a degaussing coil as secondary, unfortunately this idea comes about 40 years too late for me as I no longer have any old CRT TVs to dismantle. Have to say I think it is the design and build of the arc contacts that really makes a good spot welder.

Nice sir, Thanks for Graphical illustrating 🙏

Very good video, I learn so much from all your videos.

Very interesting. you explain everything so well and understandably !! keep experimenting, you can get even more out of that! thank you mr DGW! 😊

Your each videos really amazing ❤️❤️👍🏻👍🏻👍🏻

A nice project for brave makers, I like it!

Learned many things specially Graphs .

What would be an approximately correct size capacitor to correct power factor for a spot welder like this ?

4:58 Tips shape as like Mister Bean's greeting

Very helpful video. I liked it

I'm wondering if you could measure current somewhat accurately with a clampmeter if you just split the secondary output cable in parts and measure the current flowing through each part. (Then add the values together to get the total current flowing through the secondary.)

15:52 just look how much the windings vibrates in the transformer o__O bloodyyy heeeelllll

starting 15:15 was like best ASMR ever!!!!

12:20 try many single "loop" secondaries in parallel , for more of the core filled for more cross sectional area & a lower resistance to match the weld resistance

LOL I expected you to use some sort of fancy electrician's tool to remove the laquer. :D

nice description ... i think the secendary windings on thins transformer can not effitiently demagnetize the primey windings that cuse the power factor on primery side cant reach near 1 at full load can you measure the input power factor and if it wasnt near 1 try a series capacitor on primery and also lower the ratio of the transformer

why don't you remove the shunts? maybe i'm getting something wrong, but those shunts "short circuit" the magnetic field and limit current on the secondary, so current draw on the primary side is unaffected btw, you're lucky if windings are actually made of copper, i think nowadays they made of aluminum mostly

Lol - more fireworks than ElectroBoom this week , nice bit of work on this one

Use a solid-state relay with a footswitch and/or very short timer.

I´d like to put together a spot welder to make 18650 cell batteries- I guess I don´t need 1200w. Just enough to spot weld nickel straps. Is it possible to control the power by the wire gauge used in secondary?

I thought you are going to use it for Li on batteries

@DiodeGoneWild may I suggest a (maybe even DIY) Rogowski coil to measure the secondary current? Would love to see a video from _you_ on this topic - especially as it would fit nicely to this project.

at 7:15 diode gone wild has a bad habit of tripping the breaker occasionally I mean I tripped a breaker with two heaters plugged in and it overloaded the breaker quickly

Hey! Do you know that your build (and this video thumbnail) is being used as a click bait Google Ad for magic devices that can (supposedly) reduce the energy bill? About the advertiser Name UAB Commerce Core Location Lithuania I couldn't find a way to link to the Ad directly...

Damn I love this channel.

I think the best way to turn it on will be proper thyristor. Even then you can control welding power. Using similar circuit like these in drills or other power tools may be a good idea. Going further adding time counter you may finally produce professional device. Cheers G

"He buzzing of the transformer is the nicest thing in the video"

That was bonkers! But also very informative. ☺️

Maybe use the solenoid for a car starter motor to switch current in the primary? That would take the load switching away from the plug.

Pěkně vysvětleno, díky :)

you can use acetone or aspirin (acetylsalicylic acid) to remove the lacquer from such wires, its way easier than scraping it or burning it...

Scissors , my universal tool...

Great analysis

Nice to see you joined Lbry and Odysee, See my reply on your odysee channel under your Community Icon

5:03 LOL solder melted and dripped due to high current tests?

Good job 💪

Prosím mohl bych vědět jestli je v čechách v každém bitě/domě třifáze. dekuji za odpověď kamarádi

Thank you

Have you ever tried lichtenberg effect on wood with a microwave transformer. I'd like to see you should do a video on it and it's safety implications.

you can remove the enamel off the degaussing coil with a wire wheel

These metal chassis from PC PSUs are zinc coated, breathing the fumes from welding them is really not a good idea.

im tempted to make one lol

I think you mean 'three copper-coated aluminium hairs, in it'.

How can we avoid the tripping breaker? Is it possible to put some condensators on the primary site? I have this problem

Hi, how about use 2 transformers?

Very informative! But your accent stresses me out man.......what country are you from?

I like the feline commentary!

Please Sir can you do video of old VCD Radio frequency (RF) module with circuit diagram.

Bloody hell!

Something plated copper got me laughing. 4:32 I guess sometimes it okay to not have all the answers.

You should put 2 degauss coils in parallel with 2 turns each

Maybe you can salvage a coil from a 10 kV distribution (oil) transformer. They will be had to trim though.