Perhaps you will love the "drilling monkey eyes torture video".

Just because he did it doesn’t mean he encouraged or condones it I do it all the time but I don’t say do it there’s a difference between doing something and encouraging someone to do it

All Sihks, secure beards please.

Chinese saying 「藝高人胆大」「techniques high human heart big」meaning when one's has good technique then he/she will bold to do anything.

Thinking the same thing to use a half of a car jumper cable.

ชข

Carbon rods from batteries.

After a few minutes your battery is going to discharge because only 1 diode you put in your battery..

😂😂

Why...battery can be charged through solar panel

Even without diodes it works but it will damage the battery, so that's why he use diode to prevent from damaging the battery

@@keedzulkiflykeeabdjalil3536 what's the name of the diode place, can be improved more for battery not getting damaged?

Sacrifices must be made for greater good

@@josealfredfernandes LOL..

The diode would have turned into a piece of wire on the first try. Not needed on a DC battery anyway.

@@lyndonp6296 That's a 6A4 diod... it's common diod that comes in at 6 amps at 400 volts... that's a 2,400 watt diode. It will survive that little 6v battery ... it's there for back flow protection to keep the battery from heating up... it's still a super unsafe build, but the diod definitely didn't fuze... in fact diodes can't fuze into a conductor because of how there constructed... it would glow red hot, let out it's 'magic smoke' and loose it's conductive properties then the glow would go out and it would just be a dead diod. If your lucky it happens fast enough that the thermal expansion causes a miniature explosion, but usually it's not that spectacular when a diode fails though... usually it's just glow, smoke, fizzle, dead all in the course of about a second (a really long time in electronics).

@@binaryglitch64 Yet, in my 40 year career as an electronics and computer engineer. I have replaced literally hundreds of short circuited power supply diodes and rectifiers that have turned into Zero ohm conductors.

@@lyndonp6296 okay, well if you understand enough to say zero ohm conductor than you can totally call it a wire all day in front of me and go unchecked because you know what your saying. Also because respect for elders. You started your career when I started life.

@@lyndonp6296 I am at a lost how a pn junction becomes a wire.

Good point. I also did not catch the battery voltage?

100% agree the diode isn't needed... which I guess is why it isn't in the circuit in the video when they are welding. This is not a good spot welder.

Obviously this is a diode test circuit. It works a lot like a fuse test circuit. One and done.

It seem to be good enough for certain jobs, especially if a guy already has all the components laying around like this guy typing this comment. I have a specific task is why I'm watching a few videos, the easier and more inexpensive way I can achieve my objective is what I'm looking for. I have a $10 u.s item that I would like to repair so it don't make sense to spend $30 on the circuit board and whatever else to achieve the same results in my case. I'd be happy to return to comments when finished and give a honest review of my success or failure. If anyone would be interested in honest opinion of how this performs on everyday materials? I'm not a welder or an electrician and have very very limited knowledge how electrical currents flow. The easier it is to comprehend and implement the better for a lot of people who don't have the knowledge of electrical currents and how they work and what components you need to build more sophisticated devices. Im just a regular Joe that turns to smarter people then myself i. e KZfaq for ideas to aide me along. To criticize an idea just because you have a more elaborate sophisticated way to achieve near same results. Well post your KZfaq video and maybe the way you suggested would be better. But is it more practical for everyone or only a one time use? Keep on keeping on fellas all these diy vids are great. And I'm sure they help tons of people..

Hey, that's some high performance sh!t right there....!

The guy just makes videos that teach you enough to get hurt but not enough to avoid it. Which is probably all he knows too. Shouldn’t be posting stupid ideas like this. Someone who doesn’t know anything about electricity and what is safe will try it because it looks so easy and simple. Dying is easy and simple to do too.

i also noticed missing diode..😀😀😀

Because this diode of 10A became shorted or..exploded ! :-)

It's unnecessary. Serves no purpose but to make smoke and shrapnel.

It is necessary because we are going to use it on liion batteries

@@sharikashetty1517 Thanks Sharika for your comment. However see the title of the video It is "Spot welding machine using lead acid battery". My argument is valid irrespective of the battery type. I think adding a series diode has no meaning.

@@p.p.wijesekera7388 It is extremely important. It has nothing to do with rectification. It is a BLOCKING DIODE to avoid feedback from target batteries to spotwelder battery. Basic rule for security.

The diode ensures the current only flows in one direction. It’s for safety purposes.

@@georgestiell7740 . The only reason for a diode in a dc circuit of this type would be to protect from any back emf generated by an inductor such as a relay coil but short circuiting a battery is definitely not recommended. That is a universal instruction that accompanies all batteries. An 18650 spot welder works on low voltage and high current usually by the discharge of a large value capacitor to give a short duration high current pulse.

Well, apparently came out for a walk and will be back later...

he went out for milk

It was unnecessary and foolish. It fried the first time he tried using it.

He didn't think it would go pop. Probably made sense to add a diode he just went the wrong way about it. So probably added it just didn't know exactly how to add it.

Hey Ray! 40 years ago, one hot day in the shop... A customers car that just got into a stall for a non starting issue. Yup, the battery exploded but the hood(Bonnet)for you Brits was closed. I have an inate fear of dead shorts in high current potential. KZfaq has tons of Darwin Award winning content.

🤣 does this music piss you off to the point you're sat the watching in silence, stuing thinking "I would prefer no music at all, I didn't click on the link to be force fed the most shit repetitive noise ever". If I had a penny for everytime I heard these shit songs I would be loaded

@@DaVeHiLl200 guess it takes all sorts to make this world go round! Well I'm not a huge fan of this particular song the style is for sure in my top 5. Just to share some vibes ill share a few in no particular order. Already covered the happy techno beats, the list would also have chillstep(Kygo and Vexento), extremely bass techno (good example are Breathe by Zabo and Rebels by Black Tiger Sex Machine), *HEAVY* metal (Gojira. 'Nuff said), and what I can only describe as emotional music like Her Last Words by Courtney Parker. I'm a bigger (gym not fat) 26 year old bald dude, lotta tats and scars- basically trying to say I'm no puss but that song man... it hurts. Haven't cried at a funeral yet, still do every time I hear Her Last Words lol

Yes, it's a diode. What else could it be? It's not going to survive shorting and, if you look, it's not in the device he's demonstrating. It fried the first time he tried it... and it served no purpose.

@@DiffEQ well thanks for your comment. And to hell if I know what it was is why I asked the question. I'm not a engineer nor electrician. Electrical engineers, for all we know that could be anything or nothing. "What else could it be" some people think they're to smart for their britches sometimes. Maybe it's low self-esteem because they know something someone else doesn't they feel they have to be insulting to boost their ego? Are you sure that isn't just blade fuse in the housing for a fusable link? That's what else it could have been. But again thank you for clarifying my first guess was the right guess..

Number one, it's easier to pee than doing a number two... When about two hundred amps go through your ass or your heart. But that is unlikely because 12 v won't shock you, isn't that shocking? Not enough voltage, yeah plenty of amperage, but if electrons can't pass through you, it's like a little girl kicking you in the shin.. annoying 😅 I don't know you might be able to use a diode out of a old microwave. And hell that transformer in there will sure do some tac welding., But you better watch out, that shit will fry your cookies, I think they put out about 6000, but Not much ambridge, still yet you'll be looking like Einstein your hair all in a fizzle. But you can use one to do tack welding or even with a stick. Just got to do some modifications, that info can be found. Keep On keeping on

I think add capacitors may help to reduce damage to battery

Didn't he use a diode

A diode is used, if still doubtful then use a dry cell carbon electrode on one end.

So what trash anyway or scrap

Should have one contact on base metal and other on the piece to be attached. Putting both on the same top strip makes a short circuit and does not create a spot weld between the 2 pieces of metal..

The materials and construction are just foolishness. Diode soldered directly to the battery lead? WHY? Maybe this guy is laughing his head off just thinking of all the idiots who followed his video only to have a semiconductor fry/explode in front of them.

No because that isn't the point of highest resistance.

@@jeffcantley9203 that's because the resistor is the point of highest resistance! Just like the probes touching the metal is the point of highest resistence, therefore the wires don't melt first...

@@Quickened1 Just like the path of least resistance is not the only path for current, the highest resistance is not the only resistance. Considering the large currents in this ridiculous "spot welder", Sourav has made a correct observation. In every case, the connections should be mechanically sound before soldering. Solder is not intended to be the current carrier as it's typically 5 to 10 times the resistance of copper, depending on the alloy used, with a much lower melting point than iron, which is about 4 times the resistance of copper. The diode that was soldered in place was absurd. Not just because it was soldered in place, but because there is no way that diode is going to handle the current... and since it's missing at the end, it definitely didn't survive. Never mind that is served no purpose. THIS is why people who make videos on KZfaq are often dangerous. You can be king of the blind with partial sight in one eye and blind in the other.

@@DiffEQ I agree that this device is a joke, and it should only be used in an emergency, life or death situation. I was just stating the reason the solder would likely not melt, and if it did, so would all the insulation and just about everything else. You're right, a lot of dangerous people posting on KZfaq...

Yes, it needs a simple regulator other than that it is good stuff.

It need him electronic basic and back ground

Uhm... that diode served no purpose and didn't survive. That's why it's missing. Pointless and just plain stupid.

What type of diode should be used, plse provide the specifications of the diode

Emergency licorice candy

@@waynemasters8673 thanks. What is it's importance there?

@@umarfaruq4335 They are everywhere in electronics for a quick snack.

He use diode to prevent from damaging the battery.

@@keedzulkiflykeeabdjalil3536 hi thank you

@@edisonmanimbao6110 You just accept his answer as correct??? It's not... the diode serves no purpose and DEFINITELY does not prevent damaging the battery. The materials and construction are just foolishness. Diode soldered directly to the battery lead? WHY? Maybe this guy is laughing his head off just thinking of all the idiots who followed his video only to have a semiconductor fry/explode in front of them.

Também gostei!

que elemento eletrônico é esse que foi colocado no polo da bateria?

@@luigybh diodo

Tre

What is diode for and can it take the large current

That was Diode just to make current flow in one direction .

Why the diode is needed? The battery is DC not AC. You are going to burn the diode if the current exceeded its ratings.

yes

The diode is stupid and didn't survive. Do you see it in the end demonstration? No... it blew the first time he tried it and it served NO PURPOSE to begin with.

He obviously had enough power from the battery he was using. A car battery would just deliver more power. The part number for the diode would be BLWN2HELL.

Epoxy mix.

6A4 = 400V 6 Amp

How is the diode protecting the battery?

It's a diode.

I don't see the point of the diode. You could probably omit it. It does reduce the voltage a bit but you'd likely get stronger spot welds by removing the diode.

Its for safety, because in theory works as current limiter. If I don't remember incorrectly 6A4 stands for 6 Amperes 400v. So actually, I would like to get one around 2 to 4 Amps max since this would reduce the chances of the battery exploding in my face. If u want to do this, make sure u put 2 diodes in series so if the first fails and short circuit, the second will buy u enough time to disconnected the terminals. Edit: No, losing 1v doesn't matters, if anything it will help u to avoid sparks when welding.

@@simjang-9171 Diodes don't do any sort of currently limiting. The current you're mentioning is just the max those diodes can handle continuously before they burn. The main thing those diodes will do is provide a small voltage drop, which would reduce the current but its not current limiting by any means. The main reason for such diodes would be to prevent reverse current but you're dealing with a DC battery, not AC, so, diodes are unnecessary. Besides, you're building a spot welder. You want higher currents. If the current is too low, nothing will happen. So, why would you want to limit or reduce current? If its too powerful, just reduce the time the spot welder is on. Instead of 1 second, you do 0.75 seconds or 0.5 seconds. The less time the spot welder is on, the less likely you'll damage the cells, so you have nothing to lose by having a more powerful spot welder.

@@joemann7971 "probably" omit it???? It's unnecessary. Serves no purpose but to make smoke and shrapnel.

@@simjang-9171 Why did you even reply if you don't know what you're talking about? It's unnecessary. Serves no purpose but to make smoke and shrapnel.

No he won't, it will just melt... at worse we're looking at fire with battery acid and molten plastic spilling out across the table ... in a really really rare type of diode failure he may get a small pop from the diode... but that's a 6a4 diode ... it's rated for 6 amps at 400 volts DC so that's 2,400 watts... the dioed would out last that battery... but he configured it wrong for backwards voltage protection so the battery is likely to melt... though he'll probably notice before fire starts... it's going to start warming the plastic by the terminals first and as the plastic gets soft things will begin to shift and he'll see that his terminal is say 8 mm from where it belongs and then realize he's melting the battery. That's the most likely outcome ... but kaboom has my vote... that would be way cooler.

Not enough. It's unnecessary and not even on the device he's demonstrating at the end. It fried immediately!

Learn to type! By reading any further you agree to assume all liability and responsibility for your own actions and what you decide to do with this information. That being said, it's a "6 amp, 400 volt, rectifier diode"... If you could not figure that out on your own, than you should not make one of these. I told you anyways because I believe in natural selection. Do with it what you will, but remember I warned you.

A fake safety die odd from exploding battery/local news about you

Bad idea rating

ma che complimenti e' una cagata e ti distrugge la batteria in un botto!

Can you explain your comments further please bruh, I'm working on a 1977 toyota pickup and cutting put a the rust , only the body has rust thank God haha 😂 but I need to replace my flooring in The cab , especially in the front part of the cab, where the factory bolts the cab to the frame near the engine firewall it's completely rusted away like there's nothing g holding the body to the frame anymore , i can't afford a welder at the moment and I need this truck for work so I've been looking for ways to weld new flooring in. In also building a full roll cage hidden Inside the body , reinforcing some stuff on the truck since I'm tripling the HP it has currently. All new adjustable coilovers front and new adjustable 4 link coilover in rear to replace the leaf springs , new disc brakes front and rear, HEAVY sound deadening for floor,doors,roof and heavy duty weather stripping replacement. Lowering it a bit to help with handling at high speeds, no power steering ... anyways I'm excited AF for the build trucks factory original everything and everything works except it rained heavy one day and my speaker(yes truck has 1 single speaker ) lol went out. Anyways until I can afford a welder I have to make do with what I got 😂

@@timothy2935 it has not enought Amper to weld solid car body, you need proff spot welder or MIG

7

That's because soldering tin has lower resistance than steel he spot welders it, but honestly this video is a junk. Someone with enough understanding will know there is no diode needed for DC current.