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 👍
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 .
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
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? 😄
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.
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
"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."
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.
@@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.
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
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!
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
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.
some calculations would be nice. if you know your desired current, the mains voltage and the turns in the primary coil you can calculate the turns needed in the secondary coil, this is critical to know for this build, every transformer varies: for one an american microwave would need half the coils as a british one, however it may trip the breaker if the input current is too high, etc`, etc. video lacks any sort of explanation, i'd have that over some music.
by @1/2 the coils@ I meant in the secondary transformer coil to achieve the desired current, assuming all other variables are constant. Again, get a transformer equation off the internet, calculate it yourself, takes 10 mins to do.
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.
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
It's a timer that can provide a minimum time of 0.1s when triggered. Compare to other simpler timers in the market, its biggest benefits is that if you keep the trigger signal longer than 0.1s, the working duration is still 0.1s No idea where you live, so I can't tell you where to buy it.
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.
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.
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.
Реле в плате управления на сколько Ампер? Если на 10…16 Ампер, то думаю его нужно усилить, заменив на более мощное изделие. Ибо токи в первичной обмотке хоть и кратковременно, но могут быть больше 16 Ампер.
I'd like to say my opinion having used both diy and commercial ready solutions for spot welding... General rule of thumb: Going very cheap most probably sucks... This diy solution shouldn't be enough for spot welding pure nickel strips of 0.15mm or higher... And that's a problem for all but the most lightweight of battery builders... Similarly, if you get a commercial spot welder for 99$ (a Sunko one or whatever), you won't be able to spot weld pure nickel strips. In fact I'd argue that the 99$ is actually more powerful than the diy solution... Having used a considerable amount of time testing and researching spot welders, here's my final conclusion: Just get a kWeld... Quite honestly, it's going to be a the last spot welder you'll ever need. They haven't updated the thing for years. It's not because they are lazy. It's because it's just that good O_O. Depending on how thick nickel strips you might need, a proper power source is needed. Since 0.25mm is the max I'll ever use, I just use a 3S LiPo battery. In my opinion, it's the most budget friendly option while also being extremely portable. Another budget option (and much more powerful) would be a car battery. But the portability aspect of it, just gets thrown out of the window then. If space and portability isn't a consideration though, a car battery is the much better option. All in all, a kweld will cost you ~230€ if you don't live in Germany and live in Greece for example. If you live in Germany, much lower. Other countries might have smaller import fees. I'd say around 200-230€. Is it worth the price when you cab build your own "for free". First of all, please account for the time you use when building it. It is 1 hour? Is it 5? Is it 10?? How many trips to shops have you taken in order to buy what's needed? How much time did that cost you? How much was the fuel for that?. How much was it for all the parts needed? Is it free? No. Is it low budget oriented? Well, maybe... Is it worth it compared to a kWeld. My personal experience screams no... Imagine having a 3D printer failing 3 out of 4 prints and another printer never failing any print... Are you willing to get the first one just because it's considerably cheaper? I wouldn't... The filament (plastic) costs money... Wasted time for failed prints also cost money (if you have a tight schedule). Similarly, nickel strips cost money. A failed weld on a large battery pack, might result in many individual cells gradually failing. These cost lots of money... Even a 250€ Sunko spot welder isn't 100% trustworthy, nor is it powerful enough for bigger projects. The thing is though, that the kWeld is... Please believe me, it will save you a lot of hussle and money over time...
Thank you for the comment. It is good info. Most of the diy spot welders on RUclips do it to weld 18650 cells in small projects like ecycles. 12v lead acid packs a lot of punch and nothing compares to it, not even high drain lipos or microwave transformers. But that would be a project for someone who makes battery packs for a living. Although, these guys would rather buy a commercial one you find in a shop that makes racks from chrome plated stainless steel rods.
I don't know, but at least the author of this video has alternative ideas for spot welding. Tell me what new idea do you propose? Apparently, you only propose to buy a commercial team, that is, zero contribution of ideas, you only know how to denigrate another who is more creative than you and contributes something new. Do you understand the difference between a rat brain denigrating another with a genius brain?
I built a swing bike and a guy I know said why build it it is impractical to ride and a waste of time. I built the swing bike because it was a fun project, I learned a little bit about welding and fabrication and I have fun riding it. My point is some people just like to build things for fun and the learning experience. By the way this is a great video.
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?
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.
buenas mi hermano como estas, mire tu video del soldador de puntos y me gusto, yo ya hice el soldador y trabaja muy bien pero me gustaría si es posible decirme el modelo de la tarjeta electrónica y donde comprarla porfa
![Coheed and Cambria - Searching for Tomorrow [Official Video]](http://i.ytimg.com/vi/hDsYGLbmadg/mqdefault.jpg)
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
Зачем ты это сюда написал?!
@@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.
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 👍
@@dragan3290на трансформаторе микроволоновки в среднем выходит 0.85 вольт на виток. При напряжении сети 220в. Я мотал 4 витка и вышло ~3.5в
@@некит1 hvala puno za odgovor. Nazdravlje od Srbin! ❤
Nice technique for making the electrode clamps.
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 .
Video
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
Well did ya done did it yet?
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? 😄
Just retrofit a continuum transfunctioner if you have one kickin about.
O'Reilly Auto Parts Part # 121g
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.
i soldered batteries too, and no problems(i corrected myself)
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.
@@makantahi3731- do you weld or solder? They are two completely different things, and the OP was talking about soldering.
@@johncoops6897 i soldered many 18650 lion batteries and no problem
Hello brother plz send the board buying link thank u
Glad that you're back again!!!
😊
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
Bylo nastaveno 0,3 vteřiny. Za tři vteřiny by akumulátor explodoval.
he didnt fkin explain anything. might as well have videotaped a blank screen
"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."
excelente trabajo, muy bien hecho gracias por ello desde España
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.
Corect !
@@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.
Ravi I still your reply, please reply me thanks
Schéma svp
holy shit, i almost threw away my 1200watt broken microwave.
time to build a spot welder
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
Nice tutorial for diy spot welder. It is a clear and full video. Your skill is very well.
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?
AC in AC out
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!
次級線徑最好8mm
Very interesting. Thank so much !
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
It indeed has electrodes. Check this effect you have: en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
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.
Bro finally remebered he has a youtube channel.
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.
Why bridging the ground ends?
Hello, sorry, I'm a layman, and where would the jumper be? On the timer circuit board or would I have to put another board to make the jumper.
Channel ka name dekha to nostalgia aa gya ..5 saal pehle video dekha krta tha
very nice build on the hand held part!!
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.
C’est très bien 👍👏
OK thanks for sharing your project, I have the parts and prepared my transformer so IU will built it tomorrow.
How is your welder working?
Very good!
How many times can I weld without producing heat in the transformer?
Damn dude got 3 hands. What an awesome defect to have.
Don't be snarky. You are not right.
Look again.
The switch is in the right place.
@@milanbalasevic9347 Dude in video has 3 hands and it is a great defect to have.
excellent work 👍🏻
I like this video thank you for sharing it to view and i wish your channel more successful
i've been subbed for quite a while, always love seeing these really interesting and impressive videos, dude.
Son muy interesante y se aprende mucho
Great job. Could you share more about the PCB and its programming?
Excellent, all the best and keep it up....
Very good video Tapendra bhai. nice project. How much will it cost ? can you give an approximate budget?
крутая вещь!!!! только если есть все комплектующие))))!!один трансформатор может стоить очень дорого))))!!! а так все классно сделано!!!
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
Apne bhaut accha device banye hai. I like your work🎉🎉🎉
I made the same thing, with the same module in my channel. It worked 😊
some calculations would be nice. if you know your desired current, the mains voltage and the turns in the primary coil you can calculate the turns needed in the secondary coil, this is critical to know for this build, every transformer varies: for one an american microwave would need half the coils as a british one, however it may trip the breaker if the input current is too high, etc`, etc. video lacks any sort of explanation, i'd have that over some music.
by @1/2 the coils@ I meant in the secondary transformer coil to achieve the desired current, assuming all other variables are constant. Again, get a transformer equation off the internet, calculate it yourself, takes 10 mins to do.
Good project. Could you give me the purchase link of the timer please ?
Have a close look @ the timer and you see HW 521. Google it and you'll find.
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.
This project is very good!
These guys can just summon huge amounts of copper from nowhere
Thank you so much. What's the suggested cross section for the output coil wires?
you did a clean job👌
I like the way you built the handpiece, though I am not sure how long copper would last, perhaps Tungsten or Beryllium-copper instead?
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
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.
yes correct... should be same wire size as the xformer secondary to the welding tip wire size to maximize current output
A warning about How to discharg the capacitor Would of been good
excellent job. thanks to share your idea...
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?
50 мм
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
Good work
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.
It's a timer that can provide a minimum time of 0.1s when triggered. Compare to other simpler timers in the market, its biggest benefits is that if you keep the trigger signal longer than 0.1s, the working duration is still 0.1s
No idea where you live, so I can't tell you where to buy it.
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.
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❤
@@Diygadgetsellerbd yeah
That Good and Number one for you ❤❤❤❤
I like your video
Nice video, thanks :)
Hello! Thanks for this vidéo i will try it this week 👍 so what section of câble you use, is it 25mm2 ?
Great work!
C’est formidable 👍
Very good without gloves nice dangerous
Could you please provide a link to the electronic part that connects to the microwave adapter?
Timer delay circuit
Obrigado pela dica!
very good job
Buen trabajo 👍
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.
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.
I just uploaded a video of a 220V welding machine I’ll be converting to 110V operation to make spot welds.
It’s got a very heavy power transformer.
Instead of a microwave transformer, you can use a metal halide ballast transformer instead.
wao thank you for providing value
Hello. What size is copper round for soldering? 3 or 4mm?!Cheers
Ingenious
Your work is so clean...❤
Thanks, very good 👌
GOOD WORK I HAD YOUR DIY INOVETION ARE IMPROVED
Thanks bhai
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.
Maybe a switch would help ?
Реле в плате управления на сколько Ампер? Если на 10…16 Ампер, то думаю его нужно усилить, заменив на более мощное изделие. Ибо токи в первичной обмотке хоть и кратковременно, но могут быть больше 16 Ампер.
I enjoy it
Verry good..
Thicker and more winding amplifier current
So good! Thanks for sharing. What is the material in 6:41.
I think it is plastic as you need to have 2 brass bars isolated. Maybe 3d printed part?
Can you add size of the copper to the description? Thank you! :D
It would be great if you wrote the wire cross-section on the transformer for the secondary winding.
Verygood 🎉
I had make a seam roller with your idea. But I have some doubts can you reply back
Hi how do you program or set that timer delay? Can you share the procedure? Thanks buddy
I'd like to say my opinion having used both diy and commercial ready solutions for spot welding...
General rule of thumb:
Going very cheap most probably sucks...
This diy solution shouldn't be enough for spot welding pure nickel strips of 0.15mm or higher... And that's a problem for all but the most lightweight of battery builders...
Similarly, if you get a commercial spot welder for 99$ (a Sunko one or whatever), you won't be able to spot weld pure nickel strips. In fact I'd argue that the 99$ is actually more powerful than the diy solution...
Having used a considerable amount of time testing and researching spot welders, here's my final conclusion:
Just get a kWeld...
Quite honestly, it's going to be a the last spot welder you'll ever need. They haven't updated the thing for years. It's not because they are lazy. It's because it's just that good O_O.
Depending on how thick nickel strips you might need, a proper power source is needed.
Since 0.25mm is the max I'll ever use, I just use a 3S LiPo battery.
In my opinion, it's the most budget friendly option while also being extremely portable. Another budget option (and much more powerful) would be a car battery. But the portability aspect of it, just gets thrown out of the window then. If space and portability isn't a consideration though, a car battery is the much better option.
All in all, a kweld will cost you ~230€ if you don't live in Germany and live in Greece for example. If you live in Germany, much lower. Other countries might have smaller import fees. I'd say around 200-230€.
Is it worth the price when you cab build your own "for free".
First of all, please account for the time you use when building it. It is 1 hour? Is it 5? Is it 10??
How many trips to shops have you taken in order to buy what's needed? How much time did that cost you? How much was the fuel for that?. How much was it for all the parts needed?
Is it free? No. Is it low budget oriented? Well, maybe... Is it worth it compared to a kWeld. My personal experience screams no... Imagine having a 3D printer failing 3 out of 4 prints and another printer never failing any print... Are you willing to get the first one just because it's considerably cheaper? I wouldn't... The filament (plastic) costs money... Wasted time for failed prints also cost money (if you have a tight schedule). Similarly, nickel strips cost money. A failed weld on a large battery pack, might result in many individual cells gradually failing. These cost lots of money...
Even a 250€ Sunko spot welder isn't 100% trustworthy, nor is it powerful enough for bigger projects. The thing is though, that the kWeld is... Please believe me, it will save you a lot of hussle and money over time...
Thank you for the comment. It is good info. Most of the diy spot welders on RUclips do it to weld 18650 cells in small projects like ecycles. 12v lead acid packs a lot of punch and nothing compares to it, not even high drain lipos or microwave transformers. But that would be a project for someone who makes battery packs for a living. Although, these guys would rather buy a commercial one you find in a shop that makes racks from chrome plated stainless steel rods.
I don't know, but at least the author of this video has alternative ideas for spot welding. Tell me what new idea do you propose? Apparently, you only propose to buy a commercial team, that is, zero contribution of ideas, you only know how to denigrate another who is more creative than you and contributes something new. Do you understand the difference between a rat brain denigrating another with a genius brain?
I built a swing bike and a guy I know said why build it it is impractical to ride and a waste of time. I built the swing bike because it was a fun project, I learned a little bit about welding and fabrication and I have fun riding it. My point is some people just like to build things for fun and the learning experience. By the way this is a great video.
@@J.Cee-1675. Excellent !!!
I wonder if kWeld electronics available for open source
Exelente amigo un fuerte abrazo desde la ciudad de Paysandú ,Uruguay.
Muchas gracias mi querido amigo
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?
Very good
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.
Good job
Sehr gut!
❤❤❤ God bless you
Bel video ben fatto ma per il materiale mi fai sapere dove acquistarlo grazie.
gracias ☺️
buenas mi hermano como estas, mire tu video del soldador de puntos y me gusto, yo ya hice el soldador y trabaja muy bien pero me gustaría si es posible decirme el modelo de la tarjeta electrónica y donde comprarla porfa
It' xy-j02
Very interesting & impressive work, keep doing it bro
you do not use physic's at all, as this will not work due oms law.
Awesome
If the clamps are pure copper, they will melt in no time. This is why they sell alloy BRASS clamps.
Thank you
GOOD ONE