homemade spot welder

[MrPaulzzzz]

I watched your other video with you touching the electrodes,this will show the skeptics you know what you are doing...GREAT JOB.Some will always show their own opinions in a critical way,that's their nature,just glad some of us dont have to live with them lol.

[Vhosis333]

What gauge was the wire used to rewind the transformer



[DoYouWantMeToEatYou]

to show how powerful it is, he melts a copper wire?

wtf?

[fairyheli2]

how many input amps? is that a light switch or a higher amp one?

[stevow123]

Holy shnikeys!

[buddhafollower]

250- 300 A

[buddhafollower]

nice

[dynomike1964]

Fantastic you clever little  basturd.

[geophreigh]

all you haters are so much better inventors, so smart, but you have no videos of your own stuff. Quit hating on this kid unless you can show how smart you are

[Slic3R1]

How much current is required for an efficient spot welder?

[pounding40s]

smart ass kid nice work, sure beats other videos of kids fighting

[philmoskowitz]

An army of people who don't understand ohm's law. What a shock, or lack thereof.

[taur561]

leave the guy alone. His video is a lot more informative than video's made by other adults . We actually need more of this type of informative video rather than "I made it but will not show you how ". I am sure he knows off all the dangers and does not need nit pickers criticizing him for not wearing gloves etc.

[quandrax]

I like it. Don't sweat the nonsense posts. Nothing but naysayers on Youtube, anyway.

[lRever]

Nicely done

[TheTrappybeaver]

That's amazing.

[DougieB1337]

@teslacoolguy Could I use 374/30 4 Gauge Wire for the Transformer, Same used for welders?

[MrStemkilla]

he dosent need protective gloves i mean its vary high amps for that littletransformer but he knows not to tutch it when its on

[dudevidz]

homemade shotgun bullet shooter!

only 2 pipes needed

check at my video! watch?v=ipBY7TYQFCQ

[fjoefourty]

Have you ever experimented with a variac? ( Transformer with an indexable core) They are handy. That's a good use of copper tubing you did there. I have a jig built for my press that flattens, punches and crimps copper tubing into large gauge cable connectors.

[rudythecat1954]

Brilliant! 

[1gtaking1]

lol i would have never thought about this .. how old are you?

[kiker7sboyfriend]

pretty dangerous but very creative.also you need a filler metal to be a real "spot welder"

[pounding40s]

@kiker7sboyfriend you need to look up spot welding

[kiker7sboyfriend]

@pounding40s you need to go fuck yourself

[cheapskatevideo]

AH HOT!

[5445252]

You are rilly shaky kid!

[flight110]

Nice vid. What are you using for contacts? graphite?

[BUSTRCHERRY]

impressive. i have a cat that shits in a box-also impressive. just kidding kid. i'd use it and i WOULDN'T wear eye protection.

[akaeldin]

how old are you, and for a young guy like your self you are very smart , nice work and a great job, but a little shaky on camera. but to have almost 100 thou looking at your video that is great. what is next on your inventions.

[KRAYSLiCK999]

HOW STRONG IS THE SPOT WELD???

[KRAYSLiCK999]

HEY MAN can i use aluminum piping like how u did urs with he copper tubing?

[KRAYSLiCK999]

i got 0guage wounded in mine lots of sparks!

[SiRob119]

now i want to make one... you should show us how strong the weld is by trying to see if you can break the weld

[Riot454di]

nice but wear eye protection - if a hot piece of metal gets into your eyes you can damage your sight.

[KRAYSLiCK999]

what gauge is that wire

[Chumbbo]

your a fucking retard you dont melt copper that toxic

[teslacoolguy]

@Chumbbo lol

[CCSinventions]

@Chumbbo no it isnt galvanized (zinc) metal is. i love uninformed people

[inomyguns12345678910]

@Chumbbo aaaahhhh duuhhh

[originalusernamefail]

Nice work kid, don't listen to the haters, they are either jealous of your obvious skills or just have no idea what they are actually on about.

[pcbheaven]

nice and clear work. probably you got some negative comments and thumbs down, from people that have no idea from spot welders or from electronics in general. keep it up. thumbs up.

[georgy3030]

nice.. but to bad its not very portable.. so theres not much you can do with it :/ but still nice:)

[3mustardMoNkEyS]

Nice, are you using actual welding electrodes or just some copper rods? Or would galvanized steel bolts work?

[cenzo188]

@3mustardMoNkEyS The electrodes have to be copper. Steel has a relatively high electrical resistance, which is why a current through it will melt it and allow the steel to weld. Copper has a very low resistance, so copper cables and electrodes will not melt.

[3mustardMoNkEyS]

@cenzo188 Thanks for the heads up, I only have access to solid Brass, but that has around the same ballpark resistance of copper, would that be a acceptable replacement or is it just copper-or-bust?

[cenzo188]

@3mustardMoNkEyS I don't know, I have never tried brass. Give it a shot, if you find you are getting inadequate welds or the electrodes are getting excessively hot, invest in some copper. I used copper pipe, hammered flat and rolled into a rod shape and filed to a blunt point.

[usernameABCDXYZ]

why are you all treating him like hes stupid just cause hes a kid, there is absolutely NO danger to a person from the power output of this thing!

[ItsCiarian]

ur a idiot u need i protection and gloves

[teslacoolguy]

@ItsCiarian k

[cacon56]

@ItsCiarian ur an idiot...... u put i instead of eye... who's the idiot now

[pcbheaven]

@ItsCiarian have you compare your channel with his?

[TankCrusher210]

@ItsCiarian I R idjut? nauuu! I r nots idioot. It's 3 volts, it's not gonna hurt you. I've got a bank of 2.5V ultra capacitors that will discharge at 9000 amps shorted, but I physically CANNOT get hurt by them. Do some math, and you will see that the highest possible discharge current through average human flesh at 3V is .3mA, which is VERY far from the 20mA needed for alternating current to cause cardiopulmonary fibrillation. Touch the leads all you want, it'll just feel funny at 3VAC.

[inkybait]

@ItsCiarian yes mother

[MegaPotato18]

smart kid. and for all the haters here, if he was smart enough to make this welder, he must know a bit about electricity he knows what he is doing. nice work.

[teslacoolguy]

@MegaPotato18 Thank you for the positive reply. I work with lots of much more dangerous things then this and execute proper caution as needed. Just check out some of my other video's

[simsy1962]

Ground one of your welding tips, so no capacitive tingle..

[simsy1962]

Human issue is not linear, i.e. resistance changes with voltage, so ohms law does not tell the full story. (but 1 volt is not going to put you off your supper, agreed)

[smartie006]

nice ;)

[bruno2260]

Should have a spring loaded safety switch, so when you let go of it it shuts off the current. A foot switch would be ideal.

That switch can get accidently flipped on and it will stay on!

Just saying, nice rig though.

[mccunecp]

cool I like it I been wanting a spot welder and thats one good way to make one cool

[MrTechnophile]

Cool video! Thank you for posting it.

What are the electrodes made of, please?

Safe working habits avoid anything with voltage or that may be hot. The spot-welding voltage is not a concern. Capacitive coupling of the primary voltage can give you a tingle (small issue). However if there is a flaw in the transformer then the 120V primary voltage could appear on the welding electrodes. If lightning strikes power-lines in the area you can get high voltage arcs from primary to secondary.

[ironlionkalo]

how many dollar bills did u use to make the copper tube?

[tusnturn]

the tip of your welder is made of what?

[zwabberdeflabber]

Positive comment, WELL done.

I saw all your vids,You know what you are doing.

[Nathancomplaining]

i dono i think that a huge waist of time to make that

[BillPentode]

ABSOLUTELY BRILLIANT!!

Thank you for sharing how you did that.

.

[BillPentode]

ABSOLUTELY BRILLIANT!!

Thank you for sharing how you did that.

.

[superemposed]

well done buddy, that brilliant work

[FJoeForty]

Oh my god, you are messing with that mysterious AC current! Thomas Edison cooked elephants with that stuff. Looks like your whole house maybe humming with AC...get out of there before you die!!! Just imagine how a car battery with 800 Amps and 12 volts would kill you if you touched it?!! Two turns inducing a volt is playing with DEATH! Valveman12, you better steer clear of flashlights and cordless drills just to be on the safe side.

[chukchee]

Death is not so bad.

[valveman12]

There is no point telling this child anything. He knows it all already. He does not belive in being careful cause he thinks he's bullet proof. Just another juvenille idiot thinking he knows everything and won't listen to anyone. If you don't respect electricity, it won't respect you!

[pslawinski]

@valveman12 I met this guy, he actually IS bullet proof.

[cipriuss]

@valveman12 STOP being a teacher because you suck at it (and you are stupid too) and START learning something. It will be good for you in the long run

[valveman12]

@cipriuss If calling me stupid makes you feel better about yourself then please continue.

[OrganicDrew]

smart kid but at the same time not so smart i agree the device needs more safety protection .. that said .. he could be turning out hundreds of these devices and selling them on ebay cheap .. lets build America strong again .. and start making things at home like our grand parents use to.

[Lovesgoats]

can it weld two pieces on 0.5mm 1095 steel together?

[MegaGreeny123]

How do i get the capacitor out of the microwave safley plzz help..

[chaitanya2008raghav]

how exactly that copper wire was heated to red hot ?

[Bizbet]

How come the transformer vibration sound continued even after the 12 GA copper wire fused???

there is something fishy here!

Bizbet

[KingNast]

@Bizbet current is flowing through the transformer as long as the switch is on

[1zacster]

What exactly

Did you do to the transformer?

[DrSteveHolt]

u need to be extra careful sonny... ur headed for one dead end to playing about... get urself grounded gloves eye protection etc !!! one mistake=death

[redsamuraidragon]

I was about to say the same thing...

doesnt take but just bumping the wrong bolt or just brushing against it..

[Kankki1]

@DrSteveHolt The only dangerous thing about a spot welder is the heat.

[kimaster2]

Just tested my MOT rewind. Melted through some 12 gauge steel wire, no problem. Tomorrow I'll finish it off...probably later tonight actually :)

[jsnowick]

Great job. I was particularly impressed with the innovative modification of the microwave transformer. The presentation was also very good. The presentation was impressive. Please consider college or graduate school at MIT or a school of comparable caliber.

[StopMotionMind]

It sure takes a while for a spot welder to weld two pieces of 1/32 inch aluminum together :\

Just buy a heavy duty transformer

[MiniTruckin05]

good job

[holycrapapie]

Awesome, maybe I'll try this with one of my MOTs, if I don't make a stack.

[msichal]

Wow, great idea, I've got one MOT, but i've only played with high voltage.

[LittlePyroManiacDude]

hey can someone show me a vid or diagram as to how u wire it

[elkman123123]

Great Job, and for a lot less money than a commercial product! Can be customized, for example, if someone wanted to use smaller tips for miniature and hobby welding applications. I didnt know you could saw off the secondary of a Microwave Oven Transformer, and replace it with a couple of turns of Heavy Gauge wire. This is a great project. Thanks for sharing it with the rest of us.

[brianc5000]

It would be cool if you could make some Copper electrodes instead of the mild steel ones your using. I believe you could get a little better current flow that way. But know you were using what you had available to you, so great job.

[BKSF1]

EVERYONE SHUT UP.

[BUSTRCHERRY]

@BKSF1 HAHAHAA. that about sums it up right there.

[harsha806]

smart man.

[JozeyHall]

yeh, but an ipods transformer isnt modified to send radioactive waves at the speed of light into a cavity your meant to put your food. the least you could do is google it but if you cant be fucked, then its your problem. a uni in 1991 studied that eating food cooked in microwaves posed a greater risk of cancer because it deforms the nutrients in the food, im pertty sure they built a fairly thick metal cover around them to prevent the radiowaves getting into our body

[wav3form]

A microwave's transformer doesn't do anything like that. The magnetron does. People on youtube are so fucking stupid.

[stalkersas]

my friend, u have no idea what u are talking about !!! the gui here took out the secondary, high voltage winding, and put in 2 turns of verry thick wire. if transformer is like 800w-1kw, it means 1.4 windings/ volt. so the gui gets @1-1.2v. to get to 1 kw with 1 volt, u need amps, A TON OF THEM 800-1000 more precisely. when he melts the wire, it dont pass that much, but even half is enough to melt it. the idea is to dump energy through resistance. copper has low resistance, iron high

[stalkersas]

and more energy is dumped at the spot between 2 iron pices then at iron on copper. when a hot spot apears, that is like a hall in a big sand sac, the hall gets biger and biger. the resistance of the spot grows and the energy dumped there is biger, and melts the metals together. the power is distributed in teh entire sistem (coil, bolts, pices to weld...) but it is dumped depending on the resistance, so all the sistem gets like half, and the weld spot the other half. but varies alot in time.

[jsnsykes]

People on Youtube are Stupid Huh? Welcome to the team there Einstein.. BTW..I hope you have figured out that he isn't microwaving the metal together..

[cipriuss]

@wav3form yes, People on youtube are so fucking stupid, but they learn fast, you don't.

[JozeyHall]

yeah sick why stand close to a micro wave to get brain cancer, lets rip the insides out of one and fuck around for ages with it! even the dumbest people would know how dangerous that is and i wouldnt be surprised if it was illegal to use it like that in your shed... its called radiation

[bperryrm]

Are you joking? A microwave transformer doesn't give off radiation any more than the transformer you use to charge your ipod does. Microwaves just happen to have a larger one to handle the current.

[LittlePyroManiacDude]

hey dont bash me for asking this, but i dont really know much of anything about all this electrical stuff, so could someone like really inform me about we you use all the things you use? like why do you use a microwave oven transformer? why not any other kind?

[pivotboy63]

you use a microwave oven transformer because they are the easiest to find and can be had for little to no dollars

[cipriuss]

@LittlePyroManiacDude you use this type of transformer because the primary coil and the secondary coil are side by side and you can easily replace the second coil. On other transformers, the primary and the secondary are one on top of the other, so its hard to do any modifications:)

[amando96]

wow love it!

[acerods]

Ingenious!! Thanks,

Al

[LilGreenFiero]

Nice job. I have need of making a spot welder, so thanks for the tip using the copper pipe for crimping the secondary.

[Mykuhcyde]

yeah, not much shock risk with these, as I'm finding out... But burns are a different story :) Anyway, good work - I'll post my own vids soon.

Btw, anyone know a good forum to discuss this stuff?

[bozzza69]

needs more juice brother

[m3sca1]

nice!

[JohnnyCoolMusic]

Help me out here will ya.... you just roll tick wire around in that transformer ? Do you need to wire it to something ?

Thank you in advance

[JohnnyCoolMusic]

Awesome ! :o)

[jonnymunday]

you're very smart, i think i want to build one. be careful.

[DidntKnowWhatToPut1]

you're hands dangerusly close to like 800amps!

[teslacoolguy]

lol, more then 800A but it's only 1v so your skin resistance is wayyyyy to high to even feel anything and because the transformer is completely isolated from ground there is no way i could get a shock from it.

[DidntKnowWhatToPut1]

AMPs beet resistance, so you're skin wont hole it back I'm afrade....as far as I know anyway

[kimberlily1983]

The current is what kills you... but it takes voltage to drive current 'through' a resistance. Your skin is quite high resistance relatively speaking, so he's quite correct that you would never even feel it. At one volt, you could clamp your hand in there and I doubt you could even measure the current flowing.

Plus, it's isolated as he said. So he would have to touch both prongs at the same time to even make that matter.

[DidntKnowWhatToPut1]

O_o nicee thanks =D

[dundermiflinpaper]

wow, was not expecting that, someone who actually knows what there talking about posted a comment on youtube. thanks! seriously!

[valveman12]

@teslacoolguy Oh Yeah? Maybe only 1V, but if you grabbed both ends of your welder and turned it on, you would not be able to reply to this post. Any amount of moisture on your hands (including sweat) will greatly lower your skin resistance. Don't be so smug about this it's no joke. You really need to do two things here.

1) Wear leather gloves. 2) saftey glasses in the event a spark is generated.

Be smart!

[teslacoolguy]

@valveman12 Oh my gosh...... i just grabbed both ends of my welder and turned it on. Look, i am still alive.

[valveman12]

@teslacoolguy You are an idiot to have even grabbed them. Only a moron would do that!

[teslacoolguy]

@valveman12 I think you are the idiot here. The resistance of my skin with wet hands is around 50kΩ. Now this thing puts out 1 volt. I am going to assume that you at least know what ohms law is. A 50kΩ resistor with 1 volt applied across it will draw a whopping 6µA that is 0.00006A, far below what is necessary to cause any sort of fibrillation.

[valveman12]

@teslacoolguy Well your calculations are correct but none the less even with my vast knowledge of Electronics, I wouldn't be touching it. Too much can happen that is not in your control. BTW: After graduating from Engineering I taught Electronics for several years. If I saw one of my students doing what you did, he would no longer be in my class.

[a380rockerfan]

@teslacoolguy @valveman12 OH MY GOD! we have a idiot (valveman12) here who doesn't know ANYTHING about amperage and voltage. it really annoys me...

[valveman12]

@a380rockerfan It annoys you? So you are assuming too much me thinks. \i do have a degree in electrical \engineering as well as a degree in \hardware design plus a masters of \Engineering and you still won't find me holding the business end of a spot welder. Yes the voltage is low and yes not likely to get shocked but still i wouldn't do it because there are variables involved you can't control. So go ahead keep being annoyed.

[a380rockerfan]

@valveman12 i could say you are a prick!

[valveman12]

@a380rockerfan Ok If that makes you feel better about yourself. Why would I care what you think? Your existence means nothing to me.

[a380rockerfan]

@valveman12 I don't care what you think either, and your existence also means nothing to me.

[valveman12]

@a380rockerfan You must care because you keep posting. If you don't agree with what I said, that's fine. You are entitled to your own opinion.

[dundermiflinpaper]

@valveman: lol... I think we can all agree your the idiot here. Stop trying to act intelligent about electronics. This kid knows what hes doing, you apparently don't have a clue.

[LeeHoichuen]

Good Job! Teslacoolguy.

@teslacoolguy

6µA = 6*10−6 А = 0,000006 A ;)

[a380rockerfan]

@valveman12 jeez...... man, if YOU want to die you will need at least thousands of volts and at least 50mA+.

[shidoink]

@valveman12 gtfo and hit the books. try holding a AA battery and feel what thats like getting electrocuted by. then multiply that feeling by .75 and you have what it would feel like to get electrocuted by a spot welder. think about electrocution like getting shot. the amps is the size of the bullet and volt is how far it will travel. true the size of the blullet would be comparable to a car, the velocity the car would be traveling would be comparable to being parked.

[pslawinski]

@valveman12 Even if you found a way to get this thing to conduct directly to your bloodstream (salt water is a pretty poor conductor) it wouldn't be enough to deliver any meaningful amount of current to your heart, absolutely no risk of death by electrocution by touching the electrodes.

[ubuntupokemoninc]

@valveman12

mean't to vote down sorry, if you think this can shock try shocking your self with a AA battery its the same voltage, it can't penetrate your skin that takes at least 45volts

[MySuperscooter]

@DidntKnowWhatToPut1 the vids cool 

[ElectricRain0]

You owned that 12 gauge. XD

[teslacoolguy]

hehe yeah, if i hold the 2 electrodes closed after about 30 seconds of dead short the 4g electrodes will glow cherry red.

[hannina]

Thank for the good demonstration.

I like the concept and the design.

[MADxMovies]

woaah! that metal must be sooo hottt

[imaboygirl1]

nice for a school project to show the aug teacher...well done

[434F503E31]

I like how you used lugs to adapt the vice-jaw to the electrode. That is a good idea.