Microwave Oven Transformer Spot Welder 3

[@Shmbler]

You've shown no mercy to that poor ATX enclosure....

[@Conservator.]

🤣

[@akhilesh7313]

😂😂😂😂😂

[@dollephinerelease5919]

kzbin.info/door/3iWQeTCuDLu3zUUAbtGHqg

[@HaseebElectronics]

It is indeed a superb job. He is a valuable asset for electronics community

[@ytrew9717]

"A temporary solution which turn of course into a permanent one" love it, with all the scrap wood and screw! Real life stuff!

[@jooch_exe]

Ooooh, a new episode from DiodeGoneWild (puts down soldering iron)

[@felixthecat2589]

Why are his videos so addicting!!! damn!

[@charlespreston1068]

I have followed DGW's feed on this project with enthusiasm and have some observations. For the 'arms' of the welder I used some 22mm copper tubing and a bought length of 15mm x 3mm copper strip. This provides good stability and permits a good pressure to be applied to the weld material So far, using 3 turns (I couldn't fit any more!), i was able to obtain around 400 amps on testing. Charles Preston, Patreon member

[@1pcfred]

You could build a circuit that kills the power when the voltage decreases at the spot welder indicating the weld is complete.

[@edgeeffect]

Those copper tips are very nice indeed.... I saw the thumbnail at work and hurried home to watch the video. Before you took the shunts out, I was saying "take the shunts out, TAKE THE SHUNTS OUT" but it shows how little I know.

[@HaseebElectronics]

Wonderfully awesome and perfect job. It is useful for electronics community

[@MegaSunRise3]

I love the rudimentary but robust construction.

[@isojed]

thanks for the explanation of the magnetic shunt the DGW way.

[@alexiaaddictiv-ink1898]

Nice. Try powering the transformer from an adjustable pulse length one shot timer. You should get pretty consistent results like that.

[@michaelathens953]

That cat knows more about wire gauges than 99% of the customers I help with that kinda thing at work lol.

[@ertyuiiknbvcx]

The spotwelder we did use in the factory had copper rods that had about 5 mm diameter. They was kind of very slightly rounded perhaps, almost flat tips, the point is to get contact and heat the plates up, if the copper rods is too pointed then it just goes trough and makes a hole instead. The spotwelder had a foot pedal, so one put the plates on there and pressed with the foot. I dont think it had a separate switch, i think the switch was in the foot pedal system, but make sure it gets good contact before switching on if making something like that. It had a spring system so the pressure on the plates could be adjusted i think. I think you perhaps have more power in your spotwelder than what was in the factory spotwelder. I did not mess too much with the spotwelder but did use it a couple of days, i mostly did welding with the large 3 phase mig welding machines there. Sometimes now and then i did run the welding robot too, it was high tech back in 1990-1992, one did just put the pieces in the jig and it did welding the pieces by itself :)

[@philipreich7035]

Thanks for this set of videos! I've been thinking of building a spot welder for years, but never got around to it. Your video has inspired me to finally get it done.... I have a 1200 watt microwave with a fused secondary on the transformer, and will be building a spot welder soon from that. I wish I had saved some of the degausing wiring from the old CRT TVs I recycled. I'll have to get a couple of heavy starter cables off of a wrecked diesel truck in the neighbohood u-pull-it wrecking yard next time I am there. The diesel starters have to have large gauge cables because they draw so many amps to overcome the high compression that diesel motors have. Especially the older GM diesels because they used huge direct drive starters with no reduction gearing.... One question I have is how to do spot welding on copper or steel strips when building battery packs out of used rechargeable cells. It would seem that one of the contacts would need to be set up to have a larger surface area so that the heat of the weld would be concentrated only at one of the two electrodes. Might be a topic for another "episode" in your spot welding playlist. Thanks again!

[@kemalkurt5257]

Such a good project after third video it really looks like a spot welder. Lots of people are making spot welder from microwave oven transformers but little or no explanations.

[@mrfrog8502]

Nice project. This got me thinking... To make welds consistent you could make foot switch which switches transformer off when secondary voltage falls below 1V - meaning welded material has melted and electrodes got closer together.

[@cda32]

I love seeing shop made tools

[@Coffieman5150]

I found I could slightly increase performance by first polishing all the copper then giving a light coating of high temperature grease. This did do some good for mine.

[@socialbeat2587]

What does high temp grease?

[@hernancoronel]

Hey Diode remember the multimeter has the max function, you could have used it to check the max load for example. Thank you for the video and keep up the great content!

[@ivankirola2707]

Maybe put thicker mains cable.

[@mernok2001]

And keep the clamp meter away form the transformer because the leaking magnetic field causes it to display a higher current than you're actually drawing form mains.

[@ivankirola2707]

@@mernok2001 also good idea

[@hanztimbreza6217]

In his first video on this project he says he wants to preserve the original primary coil from the microwave. Besides, it is tedious to wind 100 or so turns on that transformer, because he wants to avoid cutting the iron core open. The core was welded shut by the microwave manufacturer.

[@mernok2001]

@@hanztimbreza6217 Ivan Kirola was talkong about the power cord,not about the primary coil.

[@Miata822]

Very clever inexpensive welder.

[@guruoo]

You may reduce the resistance losses by flowing solder onto the end of the cables before inserting them into the clamps. Or better yet, flow the cable, then add a solder trace from the cable to the clamp. Might be able to reduce it even more by putting the bend in each cable instead of using a second clamp to angle into the tips. Great video, BTW.

[@samuelgilbert9734]

You could remove the treads from the tips to lower the voltage losses.

[@afb9999]

Nice video. You could make a switch that turns it off when the voltage gets bellow 1v when the probes are close to each other and the solder is done

[@theirisheditor]

I see an "energy saving device" ad is using the thumbnail of your previous Spot Welder 2 video

[@enzoperruccio]

Oh no, why? 😂

[@theirisheditor]

@Následovník Nikoly Tesly Yes, here's a screenshot: imgur.com/XMEMTcP

[@joinedupjon]

I saw ad that when I was helping my dad with his router yesterday... I thought 'that looks leeethal' we were trying to work out how it was supposed to work

[@CoolKoon]

@@theirisheditor lol that ad is so ridiculous it's almost funny :D Google really should kick out such frauds though.

[@rilosvideos877]

You should put a switch for the spot welder on the primary side to have less wear on the electrodes and the welding material. When you make contact trough the electrodes you have kind of an arc melting the material away. You should use something like a relais on the primary side to switch, optimal a SSR (solid state relais) with at least 40 or 60 A capacity - they are quite cheap.

[@TheXlen]

Put a switch on the spring, when you push it, it completes the circuit and you've got nice automitization

[@earthboundmisfit7654]

Im new here but I'm sure you get this all the time, you have a interesting accent. Nice video.

[@roberts1938]

Next to the push spring, install the electromagnet that attracts. Then you can control the welding time.

[@randydicotti3975]

Hello sir, love your videos! I would like to suggest a video on Dummy Load Testers as they are extremely popular and fail often. I have a DL24P 180watt load tester that failed last night. I am hoping it is just the IRFP260N MOSFET under the fan. I believe such a video would be of interest to many people because of their popularity. All the best !!

[@jakub3851]

Super video krásná Konstrukce nemůžu se dočkat na příští video

[@CoolKoon]

Actually this new construction seems really neat! In fact DiodeGoneWild can you tell me where did you get these from?

[@DuroLabs85]

Niiiiccccceee : )

[@mimimi9170]

13:19

[@synqelectric6163]

😀😀😀😀😀

[@01glenn0101]

HI... an australian energy provider is using a picture of your spot welder in there advertising....

[@Amanullah-dx5uy]

Post the link

[@maxreynolds679]

Which provider?...post the link.

[@01glenn0101]

@Následovník Nikoly Tesly .. thats the one testy

[@xnmrphr]

Wow that works!

[@JohnDuthie]

Love this channel

[@nicholasvalentine3907]

Hi DGW. Are you aware that a picture of the original MK1 probes has been used for an energy saving device advert?

[@godfreypoon5148]

What does DiodeGoneWild drink? _Rectified_ spirits

[@blake301987]

Great Video!

[@ice-0568]

COOOL I LIKE THIS!!!

[@ice-0568]

You're a great electronic

[@FaysalKhalashi]

12:50 well i guess it bothers you slightly. 😁 12:57 now i am happy 😍

[@celsoneves2368]

Real very good!.

[@keithking1985]

those bits of timber worked far better than i thought they WOOD(see what i did there)

[@dwaynezilla]

The crud left on the tips in the closeup makes me wonder what you breathed in (zinc? haha)

[@d.k.9406]

Danke! Thank You!

[@grigoreman7198]

Galvanized iron sheet is difficult to weld, you must use zinc-free sheet and cleaned of rust

[@phillipsvanderwesthuizen800]

If you make the tips a little less sharp to increase the surface aria, the spot will not burn thru. (need to experiment with metal thickness vs tip diameter and time).

[@JamilKhan-hk1wl]

The tip could be filed down abit

[@phillipsvanderwesthuizen800]

@@JamilKhan-hk1wl Jip, that is actually what I meant, I just worded it badly. (the flat parts should meat flush with the workpiece as well)

[@TESLA_KF507]

Jé, pěkná bruska. :-)

[@supercritical5582]

nice job

[@DaymeEdna]

Why don’t the breakers trip when the primary pulls 26 Amps? I want to build one of these but my household circuit is rated for only 15 Amps. Love your videos, BTW.

[@jjhack3r]

Makes me want to improve my own mot spot welder...

[@abcabdi8523]

Very Interesting!

[@brianbrinckjensen]

I was wondering if a parallel supercap circuit, with pulsing control, let's say 5 per SEK would help with the voltagedrop?

[@susceptibility_]

8:54 nice fuse :D

[@d.k.9406]

Danke! Thanks!

[@OthmanAlikhan]

Thanks for the video =)

[@arthurmorgan8966]

11:30 Smart setup. Washing machine motor + capacitor, angle grinder disc.

[@rfmerrill]

Are you welding bare metal or is there some paint or something? The soot on the electrodes comes from somewhere...

[@DiodeGoneWild]

I tested it on a housing from an ATX power supply. It probably had some plating or galvanized layer...

[@LMB222]

It's the traces of the famous beer extinguisher.

[@1pcfred]

@@DiodeGoneWild be careful with zinc fumes. Breathing too many of those in gives you flu like symptoms. Don't ask me how I know. Up until too much is no problem though. You're OK until you aren't.

[@ogdan1173]

Hello. Do you are can make an soldering iron from small transformer?

[@MrCareyer]

Make more videos with more Salt again please 🤪🥳

[@1pcfred]

Even more salt.

[@burtgummer9057]

The whole room is shaking now! It's smelly as hell! EVEN MORE SALT!!!!!!

[@MrCareyer]

@@burtgummer9057 MOOOOREE!!!! SALT!!!!!

[@mernok2001]

Why did you solder one end of the secondary and not the other and put different connectors on the ends?It looks ugly of the ends are not the same.

[@mernok2001]

Keep the clamp meter away form the transformer because the leaking magnetic field causes it to display a higher current than you're actually drawing form mains.

[@cURLybOi]

maybe the automatic switch on the arm is not such a good idea - if the electrodes weld together, you will not be able to power it off. foot switch feels like a more controller solution

[@DiodeGoneWild]

It won't be an automatic switch. It would be a switch mounted into the arm so I can reach it with the same hand that operates the arm :).

[@TheLukasz032]

You should use graphite or tungsten tips instead of copper ones (since they don't weld themselves into welded material and then would increase potential weld throughput and also reduce tip wear).

[@widyahong]

14:33 like 3d printer nozzel :D

[@ЁбрагимИпатенкоибнАдхарма]

You should try to make soldering gun with this) Or soldering cannon better to say))

[@mlgisnotdead7752]

naaaaaaiisssss :))))

[@rhiantaylor3446]

I would have expected removing a turn would only improve the outcome if the winding space is then used to fit thicker wire !

[@nirodper]

well it also reduces wire length (if you cut it down)

[@michaelfisher9671]

What happened to that big screwdriver? It looks like it has a bandage on it. Also, one turn of the secondary seems to be looping out of the transformer a long way. Does this decrease the efficiency? Should it be wound tighter?

[@DiodeGoneWild]

the big screwdriver was used to stir paint :). It doesn't decrease the efficiency that much. It's because one end of the secondary was a bit longer.

[@Basement-Science]

@@DiodeGoneWild Actually I think with this transformer it might work better if you wind the secondary more loosely. It can couple more of the leakage magnetic flux into the secondary, leading to better coupling and a bit less impedance and more power. Of course you also get more resistance from longer cable Although I'm not sure how much difference it would make here with an EI core. Now that I think about it, I'm guessing the output voltage might not even be a sine wave with this much saturation. Would be interesting to see it on the scope under short circuit.

[@aurorasinplex5947]

@@DiodeGoneWild gov will have all heads for this tech thay teach us that we always have loss but never talk about the converted gain we can make from eletromagnets if u convert all the wast thermal energy around you u can use it universally as energy u need a true sine wave bipolar like the power comp dose a true pure sinewave like a grid tie inverter once the signal is made the system will turn on and consume wast thermal energy from the environment and space around you... there is free energy but it comes from Universal thermal loss and converted into a gain. so a pole Transformer and a microwave Transformer have a common between each other u can take 2 microwave Transformer provide a pure sine wave grid tie inverter to it or a true bipolar sinewave that inter acts with nature in a perfect spherical motion like a flower of life.. if ur home provides this use it as a Source signal then u can simply stack the Transformers on top of eachother in correct fasion and note that the 1 wire on the Transformer must stay connected and the other disconnected your only useing 1 wire on the hi side .. so test ur self 2 microwave transformer stacked on top of eachother same face sides. one side 120 to the wall and the other 120 side to what u want to power and useing the Transformer just the way it came out the microwave with the wire attached causes the energy in its perfect spherical motion to converted wast thermal energy to amp for u hot to cold in to out... should look a bit nuts with u use a form of wireless energy but its interacting with the environment...this is my work a compilation of Otis car. Tesla. and many other very smart people nowadays i think i found the gate source and drainif this gets out to much that it works the power comp and mib will have our headsdont do this at home warning high voltage yet i cant stop u lol DO NOT TOCH THE CORES OR THE WIRES OK u will die make sure u dont touch the core if the hi wire is mounted to it u dont have to mount the hi on the core if u dont want u connect the 1 hi wire to the same side hi on the other transformer then the core should besafe to handle if nessary

[@aurorasinplex5947]

@@DiodeGoneWild gov will have all heads for this tech thay teach us that we always have loss but never talk about the converted gain we can make from eletromagnets if u convert all the wast thermal energy around you u can use it universally as energy u need a true sine wave bipolar like the power comp dose a true pure sinewave like a grid tie inverter once the signal is made the system will turn on and consume wast thermal energy from the environment and space around you... there is free energy but it comes from Universal thermal loss and converted into a gain. so a pole Transformer and a microwave Transformer have a common between each other u can take 2 microwave Transformer provide a pure sine wave grid tie inverter to it or a true bipolar sinewave that inter acts with nature in a perfect spherical motion like a flower of life.. if ur home provides this use it as a Source signal then u can simply stack the Transformers on top of eachother in correct fasion and note that the 1 wire on the Transformer must stay connected and the other disconnected your only useing 1 wire on the hi side .. so test ur self 2 microwave transformer stacked on top of eachother same face sides. one side 120 to the wall and the other 120 side to what u want to power and useing the Transformer just the way it came out the microwave with the wire attached causes the energy in its perfect spherical motion to converted wast thermal energy to amp for u hot to cold in to out... should look a bit nuts with u use a form of wireless energy but its interacting with the environment...this is my work a compilation of Otis car. Tesla. and many other very smart people nowadays i think i found the gate source and drainif this gets out to much that it works the power comp and mib will have our headsdont do this at home warning high voltage yet i cant stop u lol DO NOT TOCH THE CORES OR THE WIRES OK u will die make sure u dont touch the core if the hi wire is mounted to it u dont have to mount the hi on the core if u dont want u connect the 1 hi wire to the same side hi on the other transformer then the core should besafe to handle if nessary

[@aurorasinplex5947]

@@DiodeGoneWild gov will have all heads for this tech thay teach us that we always have loss but never talk about the converted gain we can make from eletromagnets if u convert all the wast thermal energy around you u can use it universally as energy u need a true sine wave bipolar like the power comp dose a true pure sinewave like a grid tie inverter once the signal is made the system will turn on and consume wast thermal energy from the environment and space around you... there is free energy but it comes from Universal thermal loss and converted into a gain. so a pole Transformer and a microwave Transformer have a common between each other u can take 2 microwave Transformer provide a pure sine wave grid tie inverter to it or a true bipolar sinewave that inter acts with nature in a perfect spherical motion like a flower of life.. if ur home provides this use it as a Source signal then u can simply stack the Transformers on top of eachother in correct fasion and note that the 1 wire on the Transformer must stay connected and the other disconnected your only useing 1 wire on the hi side .. so test ur self 2 microwave transformer stacked on top of eachother same face sides. one side 120 to the wall and the other 120 side to what u want to power and useing the Transformer just the way it came out the microwave with the wire attached causes the energy in its perfect spherical motion to converted wast thermal energy to amp for u hot to cold in to out... should look a bit nuts with u use a form of wireless energy but its interacting with the environment...this is my work a compilation of Otis car. Tesla. and many other very smart people nowadays i think i found the gate source and drainif this gets out to much that it works the power comp and mib will have our headsdont do this at home warning high voltage yet i cant stop u lol DO NOT TOCH THE CORES OR THE WIRES OK u will die make sure u dont touch the core if the hi wire is mounted to it u dont have to mount the hi on the core if u dont want u connect the 1 hi wire to the same side hi on the other transformer then the core should besafe to handle if nessary

[@picanazo420]

how do you remove the enamel of the copper wires with a scissor? i mean you have to do that with 300 wires, 600 of both, if you delay 30 seconds each one, there are like 6 hours-8 hours, so i dont think you used scissor to remove the enamel, it takes way too much time

[@PrajjalakChattopadhyay]

Try thicker mains cable. Primary cable appears to be dodgy.

[@DiodeGoneWild]

It's on the list of future improvements ;).

[@pvc988]

I know nothing about spot welding, but I wonder, If tungsten (wolfram) tips would stay good for longer than copper ones.

[@LMB222]

Of course. But a rod of tungsten (Wolfram) about 250mm long costs about 50€.

[@patrikjankovics2113]

He could use carbon electrodes. Maybe?

[@pvc988]

@@patrikjankovics2113 Yeah but wouldn't carbon electrodes crumble under the clamping pressure?

[@pvc988]

@@LMB222 50€ isn't that much if it would let you have a usable spot welder.

[@1pcfred]

@@LMB222 TIG electrodes are not that expensive. You can get a whole pack for $13. But I think the copper tips he's using now work fine.

[@igormorozov6801]

I think you do not need a pedal switch, you need primary triac board control with a pedal switch. What is the max input current of the circuit breaker?

[@hullinstruments]

This is bad ass!

[@robertlapointe4093]

Nice build. I noticed some white smoke when you were spot welding the steel plates and some white residue on your electrodes after welding. This is probably zinc oxide, either from a coating on the steel (zinc plated, or galvanized), or the alloy (brass?) your electrodes are made from. It is quite toxic ( en.wikipedia.org/wiki/Metal_fume_fever ) and may also weaken the weld. Zinc coatings can (and should) be removed from steel with hydrochloric (aka muriatic) acid before welding. If your electrodes are brass (copper/zinc alloy) you might want to replace them with pure copper.

[@Purple431]

Spot weldeeerrrr. :)

[@HazeAnderson]

"And from mains it draws ..." 😮👉

[@MOJTABASHOMAL]

is that possible to use a parallel capactor with primery of the transformer for some power factor correction ?

[@Basement-Science]

You can do that, but the power factor wont be too bad under load without it either, so it wont make a huge difference. It also increases the inrush current, which is not great. I would probably leave it out.

[@Numian]

Just out of the curiosity, what is making that buzzing sound? 🤔

[@k4be.]

Mostly the transformer core.

[@Numian]

@@k4be. Yes, but how? There are no moving parts. Vibrations?

[@k4be.]

@@Numian Likely the most important phenomenon here is called magnetostriction, that is basically, ferromagnetic material changes its dimensions when magnetized.

[@Numian]

@@k4be. I see. Thank you!

[@1pcfred]

@@Numian there are moving parts. We just can't see them because the parts are very small. They're called electrons. In this gear they're going back and forth 50 times a second. And that's where the noise comes from. It is called AC hum.

[@DigitalBhangari]

All about functionality

[@PiratCarribean]

In the Netherlands we have 16a breakers. Can't even run this thing.

[@PiratCarribean]

@@gremerson I have a variac too and it sometimes trips the breaker when plugging it in.

[@LMB222]

No, you have as large breakers as you order. I have 3x32A, but I don't go Dutch on my energy. I actually use warm water in the toilet.

[@LMB222]

@@gremerson ein Anruf an die Energiefirma reicht im ein Wechsel auf 32A oder 64A zu machen. Vergiss aber nicht, dass größerer Strom kostet mehr in Abonnement.

[@Xackus]

You can pull more current for a short amount of time. Google "breaker curve".

[@PiratCarribean]

@@Xackus That is true but inrush is sometimes still too much when you plug it in at just the wrong time.

[@mfr04]

what happens if you try to weld a lithium battery with it? Maybe you should try it😂😂

[@MuhammadHanif-bx4pb]

KABOOM!

[@1pcfred]

You can just use a 12V battery to weld metal strips onto batteries. Motorcycle batteries seem to have the right current.

[@forthelulz9165]

You forget put more salt in it.

[@DigitalElectronicsCircuitsLab]

lol

[@ThermalWorld_]

Put some metal poliester film 6uf capacitors. You can have much stability

[@d1s1ntegrator56]

Shouldn't it make no sparks during welding?

[@Basement-Science]

It's probably mostly from the coating on the steel.

[@d1s1ntegrator56]

@@Basement-Science Alright, thanks for the answer.

[@1pcfred]

Heat steel up enough and it sparks.

[@fayanshorts]

Spot wield lithium batteries with that

[@ciprianpopa1503]

The pointy electrodes are part of the problem. They should be blunt, flat surfaced.

[@redandgoldfan3869]

i thought you was making a spot welder for 18650 batteries!

[@harvoormotors3050]

Niceee!!!

[@foto4chrepek315]

check line voltage just before transformer!

[@hamidmazuji]

has anyone heard the pinball wizard by the who the part where he says "i just handed my pinball crown to him" well, i use to tell people that if it has electricity running through it, i can fix it but i would just hand my crown to him

[@hamidmazuji]

like, uh, how do you think he does it i don't know what makes him so good

[@petergeurts3012]

Goede uitleg vorige film , maar helaas deze film heeft geen ondertitel. en probeer het toch te volgen, bedankt.

[@micbanand]

flatten the contacts. makes a much better weld :)

[@manizamanitj]

Try it with adding high power capacitors in secondary winding and show the results please.

[@rastapaez3992]

It has been 84 years.........

[@zack88005]

Netflix: are you still watching? Someone’s daughter: 13:45

[@FaranAhmad-it2xt]

Transformerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr.

[@arthurmorgan8966]

14:25 You need a lever to apply stronger consistent pressure

[@salermo42]

Morse code buzzer and writer :)

[@АлексейКузин-п4г]

Photonicinduction одобряет