DIY Spot Welder From Microwave Transformer | HOW TO

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Wiring diagram 👉 bit.ly/367PU8E
Parts:
100A spot welder controller - bit.ly/3IAqqUL / geni.us/APMGYH
9V AC transformer - bit.ly/48YmwzD / geni.us/SLZDG8x
Welding pen - bit.ly/3PfW3qv / geni.us/4hLZT
Microwave transformer - bit.ly/3PinjVc / geni.us/Pf43AV2
Cable connector (2 sets 35-50) - bit.ly/3wStOaX / geni.us/ckxMoSH
Foot pedal switch - bit.ly/49PSBLu / geni.us/n8aF6t7
35mm² cable (3 meters) - bit.ly/3vcCzw7
AC input socket - bit.ly/3PinW10 / geni.us/iLxkjo
AC cord - bit.ly/3wSyKg0 / geni.us/AGsA8V
5.5 mm x 2.1mm DC socket - bit.ly/3vasPT2 / geni.us/Hbs3uD
Brass standoffs - bit.ly/3TiLWlQ / geni.us/bvNG
Heat shrink tubing (12mm) - bit.ly/4c7c9wa / geni.us/WZeB
Cable lugs 35-8 - bit.ly/48VrxsK / geni.us/n3wbX
Enclosure - bit.ly/48PGpcd / bit.ly/3TiKgsq / geni.us/ppu9
Tools:
TS101 soldering iron - bit.ly/3HUzrI9 / geni.us/owyDm5G
Grinding tool - bit.ly/3Te3fEE / geni.us/Oc8v3N
Desoldering pump - bit.ly/3TuXAvf / geni.us/XFMVy7r
Hydraulic crimping tool - bit.ly/3wVdnuz / geni.us/WmyQL
Wire stripper - bit.ly/4dG6Jt2 / geni.us/6ep
Cordless drill - bit.ly/4bZg5PN / geni.us/A5AZi
Drill bit set - bit.ly/3S3i6zC / geni.us/ktAK1M
Step drill bits - bit.ly/3Pe3fU6 / geni.us/xYRx7J
Helping hand - bit.ly/3B9mIgt / geni.us/Yyqyte
Hi everyone! In this video I decided to show you have I made a simple spot welder to save your 18650 batteries from overheating when soldering. It is a highly useful tool for a DIY'er that can be used in many different projects for creating rechargeable batteries and is super simple to make! A full parts and tools list below. You can find the wiring diagram in the 100A Controller page below. Hope you give this project a try✌️
Thanks for watching! See you in the next video!
- Donny

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Опубликовано:

22 дек 2019

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Комментарии : 170

@outstanding1448 3 года назад

Very professional homemade spot welder. Nothing left to chance, you even listed all the components and tools necessary to build one. Amazing.

@DonnyTerek 3 года назад

Thank you very much!

@OlivierLopezCh 3 года назад

12:02 just as a tip, the reason why the copper pins are sticking to the nickel strips, is because they are too pointy. If you round the ends of the copper pins, they won't stick anymore. I guess you figured this out already.

@DonnyTerek 3 года назад

Great tip!

@florinbargaoanu5556 Месяц назад

Thanks for sharing this tip.I also build something like this with the components and i am trying to tune.Also i have this simptom

@osamahaltuma4164 4 года назад

Awesome work. The best spot welder build in youtube. Great work

@humphreybear96325 3 года назад

A fantastic job and thank you for sharing!

@jeremynelson8496 3 года назад

Best one I've seen. Very neat install twisting the conductors for the potentiometers. I will be building this to repair my makita and milwaukee batterias! thanks for posting

@DonnyTerek 3 года назад

Thank you! Cheers!

@benjaminmendoza41 3 года назад

Very Nice! One of the best I've seen yet! Thank you for sharing.

@DonnyTerek 3 года назад

Thank you so much!

@abhainnbeag 3 года назад

Class job , well presented and the links to the items along with wiring diagram is the cherry on the cake

@DonnyTerek 3 года назад

Thanks!

@thefalconsix 4 года назад

very neat job .. thank you for uploading

@garrett69 3 года назад

Apart from the soldering.......

@neronemario9184 3 года назад

Beau travail et belle présentation

@nik14116 4 года назад

Awesome Work, I love your Videos❤️👍

@DonnyTerek 4 года назад

Thanks a lot!

@niharanipaul7423 4 года назад

I'm speechless.😮😮😮

@silviopenteado533 3 года назад

Hi. You did a great job. Thank you

@DonnyTerek 3 года назад

Thanks for watching!

@andym5195 3 года назад

real good work..!! a worthy project...!! id love to see it displayed with different settings maybe ?

@DonnyTerek 3 года назад

Thank you! I have actually upgraded the spot welder in my upcoming video.

@user-sf9mh1ms4q 3 года назад

You can add an attachment like a diy "HOT STAPLER" for plastic repair commonly used now for car bumpers. I did, and it worked just the same as a $500 dollar unit. I just needed to add a switch to bypass the controller and it worked like a charm.

@DonnyTerek 3 года назад

That is an awesome idea to be honest. I guess you would only need to add some sort of power regulator to control the attachment temperature.

@user-sf9mh1ms4q 3 года назад

@@DonnyTerek I did not add any power regulator and worked just fine. I have a microswitch (in the welder) that I easily turn on and off to manually regulate the temp. Yes, it could be too hot but you can let go the switch even before you even touch the plastic if you want. so it is not a problem.

@funday8258 4 года назад

Can i use ammo box for diy spot welder? And plastic ammo or metal?

@michaelglier9264 4 года назад

Great work, thank you for the video. I would like to build this one too, but the link to the case is not right anymore. Do you have another link or description to the case?

@edwardjohnson9653 3 года назад

I ordered one of these boxes: www.aliexpress.com/item/1005001793810123.html?spm=a2g0s.9042311.0.0.3da24c4dprCHWe I haven't built mine yet though.

@catdayl 4 года назад

very good

@DonnyTerek 4 года назад

Thank you!

@Zomby_Woof 3 года назад

Is the controller just switching the primary? I'm considering a dual MOT welder with very short pw for welding copper strips up to .2mm to nickel plated steel (18650 cap) but obviously 100a at the probes would not be close. NM: Looking at the wiring diagram it's clear the primary is switched, so as long as the transformers do not exceed 100a - it will work. 1000w/120v= ~10amps each - allowing for losses

@johnquilala9350 4 года назад

Hi so all i need to get is 110v or 220v?

@bobhandford2284 4 года назад

Could you tell me where you obtained the electrode hand piece looks very professional. Rob.

@apoost8035 3 года назад

maybe you should watch the whole video, elctrode holders are mini dril chucks

@elkharkv Год назад

Buenas, ¿Qué fusible recomiendas usar?

@yonutz333 3 года назад

Nice video, would have liked to ses a schematic how it is all connected. Also what wirestripper are you using?

@DonnyTerek 3 года назад

Thank you! Please check my e-bike video where I have posted an in depth build tutorial including the upgrade for the spot welder. You will also find the schematic there. You can find the link for the wire stripper in the video description of this video.

@ideafromkurdistan5257 3 года назад

good video

@maatiraouki9124 2 года назад

Excellent

@DonnyTerek 2 года назад

Thank you! Cheers!

@ilducedimas 2 года назад

You rock.

@DonnyTerek 2 года назад

Thanks!

@manuelbenavidesleones2012 3 года назад

De cuánto es el cable que usas para los terminales

@itshappening9760 3 года назад

Great work! Can you tell me what's better 16sq mm or 25sq mm cable? More turns with 16sq or less turns with 25sq?

@DonnyTerek 3 года назад

Thank you! Definitely go with the larger sq mm cable. I would go with 35sq and aim for 4 turns. Check my latest video to see how I upgraded the spot welder.

@itshappening9760 2 года назад

25sq

@laodeedyskp9488 Год назад

Kerja yang rapih

@orlatris96 2 года назад

My congratulations on the realization of your wonderful project, it's excellent, I'm interested in building one for myself. Following your indications, I noticed in the captions that the cable winding on the secondary should have four turns but you only show three turns. I also couldn't do four laps, just three laps. My question is, will there be any limitations on project performance? I would like to ask what are the ideal values on the display for better welder performance? greetings thanks

@mistyherrera7340 2 года назад

Here's the formula for turn windings Vout/Vin = N2/N1 For microwaves there's usually 1000 turns, N1 = 1000

@DonnyTerek 2 года назад

Thank you for the kind comment! I highly encourage you to check my latest video on the DIY spot welder that I have built if you haven't seen it yet. There I placed four turns of wire around the transformer. The performance will be much better with 4 turns. I got ideal values using 06 for pulse and 80 for current. You need to test yourself to find the best settings. Hope this helps.

@izzzzzz6 2 года назад

If you put too many turns the voltage will be too high and cause sparks, if too few and voltage will be too low and less power available. Did you get 3 or 4 in the end?

@halilcancan975 Год назад

Merhaba.mükemmel teşekkür ederim.Kullandığın kontrol kart veya panel devrenin tanımını yazarmışsınız lütfen.

@ideafromkurdistan5257 3 года назад

thanks for u video but please what Normal Amp with timer gor 18650 battry Nickl sheet 0.15-8mm ?

@DonnyTerek 3 года назад

It is best to test different settings until you get satisfactory results.

@abhainnbeag 3 года назад

At 3:44 you are adding a heat sink for the Triac , I'm guessing the controller board doesn't come with a sink , What would i specify when ordering , i don't see it on your list , also would a cooling fan in the enclosure help ? Thanks in advance for any help

@DonnyTerek 3 года назад

Hi! Thanks for the comment. Yes, the controller board does not come with a heatsink, I just bolted a small one that I had on hand. A fan would definitely help if you are planning on using the welder for extended periods.

@user-sf9mh1ms4q 3 года назад

I did not add heatsink on my tab welder controller and it worked just fine but that is optional.

@ignaciogreco420 3 года назад

Very good. Only one question. I don t see how you connect de AC to the microwave transformer. Thank you

@DonnyTerek 3 года назад

Thanks! You can find a wiring diagram in the controller purchase link description.

@MindaugasJocionis 4 года назад

Geras, man tai atrodo kad laibai net neblogai prilituoja (tiksliau tai cia gal virina) :) Ana diena kaiptik laikinai litavau vaikam i RC masina paprastus akumus ikraunamus, kol nupirkau pakeitimui baterijos packa, toks butu pravertes :) Kuo toliau, tuo labiau man patinka tavo kanalas.

@DonnyTerek 4 года назад

Dėkoju už palaikymą! Visad malonu skaityti tokius komentarus. Turiu sutikti, tikrai naudingas aparatas ir pigiai pagaminamas :)

@cikiwidipapap 2 года назад

Hi Donn,.thats controller board can use for motorcycle battery or only for transformer? Thanks for reply🙏

@DonnyTerek 2 года назад

Hi! Sorry for the late reply. This board can only be used for a transformer.

@andrewmccauley2807 2 года назад

Hi Donny, what's your input voltage to the transformer? Thanks Andrew

@DonnyTerek 2 года назад

Hello Andrew, 220V.

@MrGizmo665 3 года назад

Hello. Do we connect the phase (L) or neutral (N) to the NY D01 motherboard or it does not matter which wire the board will control?

@DonnyTerek 3 года назад

Hi! It does not matter which way.

@MrGizmo665 3 года назад

@@DonnyTerek Thank you, because i will be build the same and i was wondering how to connect. Thanks.

@DonnyTerek 3 года назад

No problem! Good luck with your build. Check my latest video to see how I upgraded the spot welder for much better performance.

@maddogmark 3 года назад

@@DonnyTerek Can you give a link to the new video? I can't find it.

@hyrochinz 2 года назад

pulse time of 05 and current 80-85 gives good spot welds with 0.15 mm nickel strip.

@Davidimasde 4 года назад

Good work, what section of cable have you used for the secondary of the microwave transformer?

@ckinc89 4 года назад

Me orsoo need d answer... Anyone...😔 In.adv.TQ.

@esatsolenay 3 года назад

Hey. It is 19 mm2.

@manuelbenavidesleones2012 3 года назад

Good video.You can put electrical diagram.Thank you

@esatsolenay 3 года назад

drive.google.com/file/d/1I7T1R2RPA5SCVIuKYmaoztvhELfgisSK/view?usp=drivesdk

@marcinp1808 3 года назад

Hallo great job U doing,I have question about it,I doing my spot welder and last night I damaged my control board because I connect 12v DC voltage along with fan ,do I have to use AC voltage to power control board as is described on the board itself? Please text me back,many thanks.

@DonnyTerek 3 года назад

Hi! Unfortunately you have to use AC power supply for the control board.

@marcinp1808 3 года назад

@@DonnyTerek thanks

@nctxuchan6024 3 года назад

Time mình chỉ dùng 01,65 sài 2 biến áp 900e

@demetrius3308 3 года назад

Огонь!!!

@Zloy_nub 3 года назад

ты серьезно? это прямое руководство про то как делать НЕ НУЖНО, начиная с выбора провода под вторичку (19мм это даже не смешно, возможно и 25мм будет маловато) и заканчивая разьёмами которые не расчитаны под эти токи (большие потери и без того маленькой мощности - поэтому сварочные разьёмы нужно использовать, или в данном случае напрямую тянуть провод к ручке с трансформатора), не говоря о том что автор видя очевидный перегрев( нагрев до красна при точечной сварке аккумов - это как мем где болт сигнализирует о легкой перегрузке) продолжает варить 1 аккум 3-4 раза подряд (так нельзя делать даже с профессиональным сварочным аппаратом) удивительно как у него в руках банка не загорелась, возможно разряжена в ноль

@williamking9239 3 года назад

can I use the 220V microwave transformer ? all materials you can get from aliexpress? How much cost you ?

@DonnyTerek 3 года назад

Yup, I went with a 220V transformer myself. Pretty much all materials I got from AliExpress. Around 35 USD.

@williamking9239 3 года назад

where can you get the box from ? can you drew a diagram for connecting the wire ? I have none idea for wiring . Thank you

@DonnyTerek 3 года назад

Hi! I got mine at a local electrical component supplier. You may check online for a project box. You can find the link for the wiring diagram in the description by clicking on the controller link.

@edwardjohnson9653 3 года назад

I ordered one of these boxes: www.aliexpress.com/item/1005001793810123.html?spm=a2g0s.9042311.0.0.3da24c4dprCHWe

@williamking9239 3 года назад

one more detail about wiring need you to see that I am right or wrong. one wire from power plug (with on-off switch) connect to microwave transformer, and 9v transformer and the other wire connect to control board and 9v transformer and third wire connect to the ground. what is the wire spec. that you use for ?

@DonnyTerek 3 года назад

I just use regular cable I salvaged from some equipment powered by wall outlets.

@martinmajerik2464 3 года назад

Hi how fuse you used in ac connector how many ampers fuse please

@DonnyTerek 3 года назад

Hi, sorry for the late reply. A standard 10 amp fuse will work fine.

@R2D2inAustralia 2 года назад

What voltage is the new secondary winding producing ?

@DonnyTerek 2 года назад

Approx 3-4V. Check my other spot welder build video for a more detailed look.

@R2D2inAustralia 2 года назад

@@DonnyTerek subscribed 🤗

@Samuelbsrr5 9 месяцев назад

Would be good if you show a drawing how you wired it that controller board

@DonnyTerek 9 месяцев назад

Hi, please check the upgraded version instead: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3zuP3vGXLk.html

@williamking9239 3 года назад

how many amp 40a or 100a control board ? 120v or 220v to 9v transformer ? 120v or 220v microwave ? I am in usa.

@DonnyTerek 3 года назад

You can go with 100A to be on the safe side. Use 120v transformer if you are in the US, same for microwave transformer.

@user-ow7nd5wh4x 3 года назад

Коннекторы для силовых проводов слабые как и само сечение, долгий импульс, в результате посиневшая лента, что не является хорошим признаком сварки. Коробочка красивая и не более того.

@izzzzzz6 2 года назад

Thats 3 turns needed on the transformer right? Because in the subtitles it says you wound 4 turns off camera.

@DonnyTerek 2 года назад

Yes I did 4 turns. More turns result in higher amp output.

@orlatris96 2 года назад

Hi, could you help me please? I made a spot welder with the same plate you made yours. Now it stopped working, that is, it does not fire. It has the two green LED's on and the red LED in the middle is blinking, but it doesn't trigger, could you help? thanks

@DonnyTerek 2 года назад

Hi! Sorry for the late reply. I would double check starting with the connections, the trigger switch, then the 9V transformer output voltage, then the main transformer. Please check with caution.

@OE8ACT 3 года назад

Could you please tell me the dimensions of the case? Thanks

@DonnyTerek 3 года назад

Sure! It is 23x22x10 cm.

@tomasjosefvela1 3 года назад

Nice!

@DonnyTerek 3 года назад

Thank you! Cheers!

@Adam1nToronto 3 года назад

Why does everyone place both electrodes onto the nickel strip being welder? Would you not get better results by placing one electrode directly onto the cell, and the other onto the nickel strip? That way, all of the current passes through the spot being welded, and none of it short circuits from one electrode, across the nickel strip to the other electrode.

@DonnyTerek 3 года назад

I guess that would easily destroy or possibly result in an explosion of the cell since the current would flow through the electrolyte from the positive electrode to the negative, resulting in a dangerous short.

@user-2uf2kr2c 2 года назад

Hey, why don't you use a toroidal transformer? Regards

@DonnyTerek 2 года назад

Hi! A toroidal transfomer is used for totally different purposes which do not require high current.

@jbrev7951 3 года назад

Did you put insulation between part and cooler at ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UseccvORpk8.html or just thermal paste ?

@DonnyTerek 3 года назад

I put some thermal paste in between but actually it turns out that the heatsink is not needed for the triac since it does not get warm at all even after extended use.

@jbrev7951 3 года назад

@@DonnyTerek Thanks for your reply. I see in some videos that the metal part of transistor , mosfet is conductive and should be insulated with a plastic sheet and plastic washer for the screw.

@austriasanchez2784 4 года назад

good day sir..do you have a diagram of this DIY spot welder?

@esatsolenay 3 года назад

drive.google.com/file/d/1I7T1R2RPA5SCVIuKYmaoztvhELfgisSK/view?usp=drivesdk

@kriscapo5330 3 года назад

66%666666666

@theidiotdrivercom 4 года назад

I USED A110VAC MW TRANSFORMER AND USED 12 GUAGE MULTI STRAND WIRE FOR THE SECONDARY AND GOT 7 VOLTS OUT AND ABOUT 94 AMP CURRENT. BEFORE I TRY WILL THIS WORK ? AM I TRYING TO INCREASE VOLTAGE OR CURRENT ? IS MY SIZE WIRE GOING TO LAST ?

@DonnyTerek 4 года назад

Hi! It is best to use 4 or even 2 gauge wire for the secondary winding. This will increase the current and lower the voltage for better welding.

@binhthanh8756 2 года назад

Để time 1s,2s thôi

@woutertollenaar3530 3 года назад

how thick is your nickel strip

@DonnyTerek 3 года назад

0.15mm

@elecdroid3666 3 года назад

Weld time is too much.you must reduce it. Otherwise batteries rip

@samuele5215 3 года назад

Capolavoro

@EDIPSOSTT 4 года назад

I get 1.3volts output voltage is that OK?

@AdelyDeni 4 года назад

I think it should be 3V or higher for good results.Try thicker wire or more windings.

@EDIPSOSTT 4 года назад

@@AdelyDeni I use 35mm welding cable and 2 windings it doesn't fit more.

@AdelyDeni 4 года назад

@@EDIPSOSTT 35mm is like 2AWG and i think if you could get like 3-4AWG wire you could wind it more and therefore get more voltage with more windings.The less space is in the holes the better it gets and if the wire is too thick is not efficient as it could be.

@EDIPSOSTT 4 года назад

@@AdelyDeni I managed to make 3 windings and got 2.1volt

@AdelyDeni 4 года назад

@@EDIPSOSTT Great job now test it,mybe it will be enough for your needs if not you know what to do ;)

@HulstylerOne 3 года назад

What is that device at 4:00? :)

@HulstylerOne 3 года назад

oh, its the transformer you silly man

@geraldtuck8864 3 года назад

Great work but you are to smart for me on the electronics.

@vegardwits2117 3 года назад

Very nice job, and very inspirational. Small tip about transformers: Input winding is not primary. Highest voltage winding is primary. So at 0:36 in the video, you removed primary winding. Not secondary :) Because transformers are intrisically bidirectional, wich side is input is arbitrary.

@mwint1982 3 года назад

Sick burn

@esatsolenay 3 года назад

He is doing right. Primary winding is thick winding. Secondary winding is thin winding. Because microwave ovens uses high voltage from secondary winding.

@basel215 Год назад

Что то тонкие провода. На вид 16мм2

@thedarkspirit3371 3 года назад

Как всегда лента перегрета и почти не держится 🤦 Главное чтобы видос слепить, а если кто повторит, во потом разочарование будет что эта херь нихрена не варит.

@omaramreki1288 3 года назад

Hi please tell price

@DonnyTerek 3 года назад

Not for sale, sorry.

@ginotuttofare6511 3 года назад

Ciao bellissimo quello che hai fatto nn e che lo posso avere io pagandolo mi dici tu se è possibile ti do il mio indirizzo e tutto ti ringrazio in finita mente mi fai sapere

@ali.gamidov Год назад

Очень сильно перегреваете, это плохо для батарей, уменьшите задержку

@thuyhoc9432 3 года назад

Làm máy hàn Cell, mối hàn sấu quá đen thui à

@pppaaa1079 3 года назад

There's no 'how to' here, only a 'how you' did it.

@mistyherrera7340 2 года назад

Read the wiring diagram that comes with the board. You solder the components to the corresponding location on the board.

@theosalt1 3 года назад

What a time waster. Too much video time showing how clever you are in doing the basics, screwing nuts and bolts, drilling holes soldering. Keep the actions relevant and technical and leave the basics to the builder. If the builder can not do the basics then perhaps he/she should not be doing the project. I am at this stage 9 minutes into a 12 minute video and really do not yet understand where you are going with it all, but my goodness I sure know how to drill a hole and screw up a nut and a bolt.

@DonnyTerek 3 года назад

Hi! Thanks for the honest opinion. I'm actually not too happy of how I made this video myself now that I look at it. Definitely too much unneeded footage that should have been cut off. I will post some more in depth info on upgrading the same spot welder for better performance in my upcoming video.

@theosalt1 3 года назад

@@DonnyTerek Hi Donny, hope I did not come across as too hash. I was trying to point out to you [as briefly as I could] how what was your potentially excellent project seemed to get bogged down in the wrong sort of details and trivia and seemed to lose direction to achieve the aim of the project. Nevertheless I really enjoyed the concept you were aiming for as well as your technical expertise. Keep up the good work.