BUILD A DIY SPOT WELDING MACHINE

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In this video, I'll show you how to make a spot welding machine from an old microwave oven
Used Component-
1. Transformer from an old oven
2. 10mm copper wire (2 meter)
3. Timer circuit
4. Copper Bar
5. Wooden base
6. 12 AWG Silicon Wire
7. Push button
8. 20amp Fuse
Thanks for watching

[@bachmagiao]

I have done about 50% of building a spot welder from oven transformer. Output test about 3.6v. I think it take me a day for all. Thank you so much

[@villishon8921]

Зачем ты это сюда написал?!

[@bachmagiao]

@@villishon8921I was learning to do the first microwave transformer spot welder when I wrote it. Now my project have done and it work really well.

[@dragan3290]

3.6 volts is your output voltage? And how much is the current? Or how many turns on the transformer? Is it 110 vot or 240 volt? Any reply appreciated cheers 👍

[@некит1]

@@dragan3290на трансформаторе микроволоновки в среднем выходит 0.85 вольт на виток. При напряжении сети 220в. Я мотал 4 витка и вышло ~3.5в

[@dragan3290]

​@@некит1 hvala puno za odgovor. Nazdravlje od Srbin! ❤

[@AmazingSmart-ngth]

"Impressive DIY Innovation! This video showcases the ingenuity and creativity of the maker community. Building a spot welding machine from scratch is no small feat, and it's inspiring to see individuals taking on such technical challenges."

[@strikerj4810]

Damn dude got 3 hands. What an awesome defect to have.

[@kkp4297]

holy shit, i almost threw away my 1200watt broken microwave. time to build a spot welder

[@yomeyo6622]

The value of these videos is priceless. Thank you so much for making such detailed tutorials! Next, can you make a video on how to make a Flux Capacitor for a Delorean? 😄

[@gregjones3660]

Just retrofit a continuum transfunctioner if you have one kickin about.

[@carlbruschnigjr1757]

O'Reilly Auto Parts Part # 121g

[@angelorosadasilva4756]

Thanks for the video. There was just one detail missing. You need to make a jumper between GND and GND_T. Other than that, it's a great project.

[@nuboyhere]

Why bridging the ground ends?

[@Xmukherjee]

Although I am fine with soldering my 18650 or using a holder for it. However I am impressed with the way, you have built the spot welder. Kudos.

[@makantahi3731]

i soldered batteries too, and no problems(i corrected myself)

[@johncoops6897]

Very bad idea to solder directly onto Lithium batteries! The heat can melt/damage the insulating separator foil inside the cell, as well as boiling the electrolyte and causing venting from over-pressure. It's OK to solder (quickly) onto welded tabs already on the battery. However, the casing of the battery is a huge heatsink so you need to dwell a long time to get enough heat for solder to melt. This causes the damage to the cell. Much better to spot weld on bare (new) cells because the duration is far shorter, so less heat gets inside the battery cell.

[@johncoops6897]

​@@makantahi3731- do you weld or solder? They are two completely different things, and the OP was talking about soldering.

[@makantahi3731]

@@johncoops6897 i soldered many 18650 lion batteries and no problem

[@ahlebaiteatharhussainiyat318]

Hello brother plz send the board buying link thank u

[@tangogrua]

excelente trabajo, muy bien hecho gracias por ello desde España

[@giuseppecervi1968]

Very good work and perfectly explained. Just let me know the size of the cables used and if instead of the timer is possible to install just a trigger. Three seconds could be as well be counted mentally. No words were needed. Thank you. I did subscribe

[@milankral5891]

Bylo nastaveno 0,3 vteřiny. Za tři vteřiny by akumulátor explodoval.

[@johnjingleheimersmith9259]

he didnt fkin explain anything. might as well have videotaped a blank screen

[@rajivbasak5167]

Bhai, the device you have made is really great, I have tried it at home and I have created the same for myself, but there is one information is missing in your blueprint of design for the connection of the timer circuit " a jumper need's to be set between GND & GNT_T of that module then the trigger mechanism will work else it won't work", please rectify in your Design properly and publish once again the blueprint.

[@mariusmihalache62]

Corect !

[@rajivbasak5167]

@@ibrahimsiddiq4102 first of all this is not my page, I don't know how to share the picture here. Else I would have share it already here. If you know how to do that please let me know.

[@ibrahimsiddiq4102]

Ravi I still your reply, please reply me thanks

[@kikiflores6738]

Schéma svp

[@moonolyth]

very nice build on the hand held part!!

[@black53342]

Bro finally remebered he has a youtube channel.

[@davidshanlay]

The only issue in this tutorial was using small wires. The timer board is an optional and it is good to have one if preferred.

[@sorosh9962]

بسیار عالی، هندیها استاد الکترونیک هستن، بخصوص در تعمیرات موبایل،

[@furik261]

крутая вещь!!!! только если есть все комплектующие))))!!один трансформатор может стоить очень дорого))))!!! а так все классно сделано!!!

[@John_Smile]

You made a mistake in executing the welder machine. (I made the same mistake.) The red and black wire are very thin and reduce your current from the transformer . That's why the weld is weak. Double those wires and you'll get a strong weld . Yesterday I made a video demonstrating this. (this mistake.) I put a 6 mm wire in the transformer, and at the output I have over 600 A . But since I put 30 cm of 3 mm wire, the current dropped to 350 A. I will upload the demo clip next week .

[@kikiflores6738]

Video

[@XXxxcrisisxxXX]

there will be some loss in the high temp silicone wire, but its not much, the cable thats in the transformer is doubled up and thicker so it should be fine. if they used the red and black cable inside the transformer then you would be correct

[@strikerj4810]

Well did ya done did it yet?

[@kettogeerman174]

What gauge of wire has been used at the secundaire part of the transformer, how much "VA" was the transformer? What voltage comes out at the secundaire side? Very nice for a hobbyist, many questions for profecional technician!

[@mountris7can]

very nice video and simple enjoyable work! with nice background music!!...Now I want to make one but Im unpleased that my mother threw the small kitchen she had to cook. and I cant get the coil. lol

[@bogdanconstantinescu8331]

For those who want to make this tutorial, let me tell I made it. He misses some important things and I really dont know how the hack is working for him when clearly the board is missing a connection for example. Anyway, I made it and the welding is not strong. He says 3 turns of cable but I recommend 4 if posible with 6mm cable. I used 6mm wire with 3 turns and the same transformer. The copper heads are from old battery spot welder. The welds now are not strong. I will try to change the cable with a 6mm and 4 turns and see if the welding gets stronger on 0.15mm niquel plates.

[@kefasmusa9593]

I so much like this video, but it would have been better with voice instructions for people like me who doesn't know much about PSBs

[@charliecharliecharliecharl8554]

A warning about How to discharg the capacitor Would of been good

[@Artcraftcreations-y6s]

super good...put good rubber handle, gloves too...safety first.....

[@creativemanoj8696]

Apne bhaut accha device banye hai. I like your work🎉🎉🎉

[@ahmetustun2356]

Thicker and more winding amplifier current

[@vobinhthu5299]

This project is very good!

[@jellotheremate5309]

i've been subbed for quite a while, always love seeing these really interesting and impressive videos, dude.

[@GravielBesse]

Son muy interesante y se aprende mucho

[@mehmetgjata2967]

Amazing well done that works perfect. I saw some coments asking for the size of electrodes, this is not a welding machine this is spot welding no needs electrodes

[@eniregnat]

It indeed has electrodes. Check this effect you have: en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

[@JuanGallego-k6l]

Great job. Could you share more about the PCB and its programming?

[@chotuusian4127]

Good work

[@normellow]

Instead of a microwave transformer, you can use a metal halide ballast transformer instead.

[@georgepilch8396]

OK thanks for sharing your project, I have the parts and prepared my transformer so IU will built it tomorrow.

[@bbstacker70]

How is your welder working?

[@dantronics1682]

quick question, the cable that you used in the secondary winding, I noticed toy used 2 core of that size cable, can you tell me what sort of current you were expecting to get out of that transformer and what voltage, and since you used that size cable why did you reduce it in the size that went to the welding tip

[@kokor7409]

I fully agree with you. Why use smaller gauge wire from the transformer to the tips? If I make this, I will use same wire all the way to the tips.

[@waltervaldivia2399]

Good project. Could you give me the purchase link of the timer please ?

[@kean3545]

Have a close look @ the timer and you see HW 521. Google it and you'll find.

[@johncoops6897]

Search the usual online markets. They are widely available, and there are only a small number of models I total. The ones with Blue LCD screen and 100A SCR are the best ones, as they offer dual-pulse with duration setting for both Pre (cleans the surfaces) and Main pulse.

[@FixitEasyDIY]

I made the same thing, with the same module in my channel. It worked 😊

[@michaelrtreat]

Ingenious

[@ursopolar6535]

Very good! How many times can I weld without producing heat in the transformer?

[@abomiortdia9102]

Could you please provide a link to the electronic part that connects to the microwave adapter?

[@ArifulHaqueBD]

Timer delay circuit

[@shtrudel-pu1cm]

very good job

[@TheArachnoBot]

These guys can just summon huge amounts of copper from nowhere

[@maatiraouki9124]

C’est formidable 👍

[@faridnaser4315]

Thank you

[@HungPham-sk5kz]

Very interesting. Thank so much !

[@DrSanaullahkhan98]

Excellent, all the best and keep it up....

[@aubrymacielpereirafilho3017]

Valeu muito obrigado!

[@franciscojunior6321]

Obrigado pela dica!

[@everythingtv1910]

I like this video thank you for sharing it to view and i wish your channel more successful

[@SimplyJessy041782]

I enjoy it

[@ab_ab_c]

Your link to JLCPCB is a generic link to their website. Where is the gerber file for your control pcb or where can it be purchased online? I prefer the input voltage to be 120VAC from the mains @ 60 Hz. Where can I get a control module for that & how many amps would the mains needed for the spot welder to work from a 120VAC mains supply?

[@aviditepa4749]

Your work is so clean...❤

[@vadimzol]

Hello! Thank you for the video. But I don’t understand where to buy such a control board! Nothing on the website is clear at all.

[@edinaldomanuel8329]

excellent job. thanks to share your idea...

[@mohinderkaur6671]

Great work!

[@WasimKhan-qy6rf]

Tell the parts details which u had used it will be very useful

[@BudiSantoso-ej2yq]

Verry good..

[@aaachandan]

i'm totally agree if you want to make a video this level then the frame work behind it will take a lot of time, keep growing @tapendramandal

[@mohammadfarzankia2636]

Dear engineer,thank you for sharing video,I wanted to know the spot welding transformator input is 12 volt DC current or 220 city AC current?

[@vi683a]

AC in AC out

[@faruk33777]

you did a clean job👌

[@sm00073]

there is a possibility that the button or relay will fail, they may remain closed and you will have to quickly pull the device out of the socket.

[@Radar120155]

Maybe a switch would help ?

[@Sandokans]

Hello. What size is copper round for soldering? 3 or 4mm?!Cheers

[@lifeafterlife9939]

I don't understand one thing. That card is programmed at 0.5 seconds for example. If I keep the button pressed for longer than the set time, does the card disconnect anyway? Because I have another timed relay, but if you keep the button pressed the contact remains closed, even after the set time.

[@Quoctv0946]

Verygood 🎉

[@maatiraouki9124]

C’est très bien 👍👏

[@nuboyhere]

Thank you so much. What's the suggested cross section for the output coil wires?

[@khcreative8]

I like your video

[@rezanassiry7408]

Thanks, very good 👌

[@connorwatkins1901]

Toroidal Transformer made from a microwave transformer? I don't know if it's enough for thicker gauge but most small ~20 watt guitar amps have a decent single 125VAC to 2-phase (12vx2vac), the core is similar in configuration but 1/8th the size.

[@UjagarMahanandia]

Koun Sa Charger Kitna Ampere Ka hai

[@AxolotlPlayz111]

GOOD WORK I HAD YOUR DIY INOVETION ARE IMPROVED

[@tapendramandal]

Thanks bhai

[@RelaxingMeditationRelaxClipsvn]

wao thank you for providing value

[@ae00505]

Very good video Tapendra bhai. nice project. How much will it cost ? can you give an approximate budget?

[@daniel13021]

Why you make those cables so thin? Why did you then run double wires thru the transformer?

[@RixtronixLAB]

Nice video, thanks :)

[@engjds]

I like the way you built the handpiece, though I am not sure how long copper would last, perhaps Tungsten or Beryllium-copper instead?

[@bogdanconstantinescu8331]

How long can u use it? I make lithium batteries and I want to know if I can build batteries without getting too hot the wires or the copper plates. My current spot welder get very hot after welding 20 cells for example. I need to know i can weld without pause so I can try to build this model. Thanks.

[@CauOngTroi]

Your transformer is too weak. You should use a long timer to solder the battery cell, the soldering points will burn and not be secure. I built it the same as you, the primary transformer only uses about 180 volts and the secondary coil uses wire over 10mm and combined with a 0.01s timer, the welding is very solid. You can refer to my channel for more information

[@engjds]

Can you post a link to the timer circuit?

[@Headingmashine1]

Is it safe to keep transformer opened, and not hiden in a box? I have bought almost everything i need to make mine welder, but i'm trying to figure out how to make a safe box for all those electric.

[@pulpo439]

Buen trabajo 👍

[@irfantat4172]

Good spot welding cannot be done with 3 Volts. Because the voltage is low, you have to extend the time. 0.3 seconds is a very long time for spot welding. If you keep the time too long, you will burn and deform the nickel strip. Instead of folding the cable in half and wrapping it in 3 turns, wrap it 6 turns in a single layer, so the voltage will increase and you can make a much better spot weld by reducing the time from 0.3 seconds to 0.1 seconds.

[@Diygadgetsellerbd]

First of all thank you. I don't understand one thing, what is he AC 220V Input? Or 9V? Please reply asap as I want to make it❤

[@JerryHenderson-oi2hs]

@@Diygadgetsellerbd yeah

[@aldecirs]

top exelente maravinha

[@creativeability]

Awesome

[@alexa.davronov1537]

Please, share PCB circuit. Thanks.

[@jhonydelacruz9189]

how many volts and amps. the adaptor powering the trigger circuit?

[@suhailasim6683]

could you please upload its wiring diagram, specially input and output

[@rahulmangrulkar506]

Bhai iss machine ko kya baad me as arc welding machine use kar sakte hai kya

[@azedinerachidy537]

where to buy timer module?

[@sohandey212]

❤❤❤ God bless you

Can you add size of the copper to the description? Thank you! :D

[@marciopires6769]

friend, beautiful work, I'm trying to make one like it, a question, you bent the wire 10mm and gave 3 turns in the transformer? right?

[@АлександрЖидков-я2д]

50 мм

[@rikstrauven9778]

Would be nice if ytubers make a picture with Amps & Volts . Pulse lenght and Amps . Mine has 4.6 V and 148 A for heavier material ok but not for batterycells , next i try thinner welding probes ,, maybe thats why it not welding the nikkel . grts rik (belgium)

[@hafo821]

Nice, but relay is not fast enough for this operation..a triac needs to be used here

[@lakshmanmanjhi2913]

good

[@tof3275]

What is the value of the power supply. 🤔🤔🤔 What length of copper bar needed 🤔🤔🤔 Value of little push button 🤔🤔🤔

[@ВсеОК-н8ч]

Провара нет потому что: 1) Слишком тонкие провода от транса до ручки. 2) Не плотное прилегание контактов, они должны быть подпружиненные, 3) По хорошему должен быть двойной импульс, таймер такого не даст. И не плохо было бы хотя бы 3 витка, но из за отсутствия хотя бы 25го квадрата, много места теряется на изоляции, надо было снять изоляцию, сложить провода и засунуть в термоусадку, тогда бы смог засунуть 3 витка.

[@chalermpolpasaja9758]

What is the maximum weld thickness in millimeters?

[@rogervancouwenberghe6685]

Very small, in low melting point metals, maybe 0.01 mm, but ok for this. Consider the melting point of the electrodes, too.

[@adisHI-IQ]

How many volts do you have at the secondary output?

[@georgepilch8396]

Did you find out, I got around 2.5v

[@mayhutnoi]

Hay đó bạn

[@mardulles5420]

Good ❤👍

[@clifftheoklitou5847]

Is there a link to buy the timer circuit 🙏

[@gigimacovei1983]

amazon

[@metultechhd397]

Good