anyone who has ever messed around with high voltage or high amp stuff, knows how much nerves it takes. Even when you are sure you did everything correctly and being safe it still takes a lot of guts.. You got balls man.. thanks for the video.
hi! i have cut and rewound my MOT with thick 2 gauge speaker wire and i was wondering if keeping the shunt in (small iron bar) would affect it's current output?
Because mine is still in and i want highest current output...
I guess you must be shy or something huh? Wish you'd have talked us thru it, what you did and why, and all that good stuff , at least for dummies like me who don't have much of a clue. I do need to do a tiny bit of spot welding, and my welder broke.
some how I dont think it is entirely safe to spot weld things onto alkaline batterys. But this is still cool and I may want to try to make one of my own.
That takes way too long to weld. You can watch the entire top of the battery get red hot before the weld occurs. This should never be used on Lithium ions as they'll likely explode or die as a result. You need a capacitor or a battery bank to get the current and voltage you need to do a rapid battery tab weld. Otherwise, good video; very educational. Thanks!
Don't you have a voice? I can hear you making noises with your tools, etc., but it would be helpful if you could explain verbally what you are doing. Are you afraid to speak for some reason?
With that new foot switch you may wish to add a timer. This will allow you to have repeatable welds. Also that foot switch can be made from a limit switch and sme sort of pivoting device. The timer should be in seconds or less.
Question for you? I built one and have a 5v output. i can weld normal alkaline batteries but cant seem to weld a ni cad. my tabs burn holes and doesnt stick to the ni cad. any advice would be awsome. I am using tungstem tig tips for electrodes.
Id use capacitors in the tab welder.Gives a much more better result.This setup still seems to just weld them together with arc.Capacitor one would melt the metals from the spot you want to be welded.
hi guys i bin playing a bit and find that coca cola cans are good to use as spot weld metal for battary terminals. i will post a DIV on this soon on my site.
your guess is better than mines.. i'm thinking 175 amps?? 1100 watt oven, 5.2 volt stepdown, not a good 10guage wrap on the secondary... better to just get an ammeter
I showed the shorting of the cap before removing it. I also showed a picture of keeping the cap shorted (caps could charge up on its' own and still bite). the magnets is from the magnetron (makes microwave radiation). fan motor is an inductive motor (no permanent magnet required).
I have a small hobby MMA welder (About 120A). Rather than hack a Microwave Oven transformer I was thinking of sticking a one shot timer (0.1 to 2 second) on the mains input (Triac switched) with a footswitch to trigger, then convert the electode holder and Earth Clamp into two small brass pointed rods for the spot weld. Do you think this would do the same job?
Sounds like a great project. Probably a much better setup than what I have here. I would invest in some alloy electrodes made for your app instead of the brass though. Probably need to do your homework on that part. Will you be posting your progress online? Share if you do! Aloha!
Hi There, thanks for your feedback on this. I'm torn between this solution or the big F off 600,000 uF Capacitor discharge type welder. The Capacitor option means quite an outlay on good low ESR Electrolytic Capacitors and a 50 A (2500 A peak) SCR although the Caps are the dearest part. Other than that though a variable bench DC power supply and a trigger circuit to fire the SCR is all that is basically needed. see continuation -->
If you have access to a bench PSU (this is used to Charge the Caps) then the expense for the Capacitor discharge welder is just the Caps and SCR. The arc welder idea is cheap if you have a basic MMA welding set to hand as the electronics is is relatively cheap. The biggish mains rated Triac is the main outlay. In all though its worth trying out the arc welder. I will share the results on You Tube for sure. see continuation 2-->
I'm interested to know what advantage Aluminium electrodes would have over Copper or Brass? Cu is a better conductor although Al is still OK about twice the resistivity, i.e. 28nOhm.m as opposed to 16.8nOhm.m for copper. Thats it!!!
I did pull one tab and there was a small nub but many did not leave behind anything. I think a larger gauge wire for the secondary and smaller hardened copper electrodes would be a better idea.
you meter wasnt broken it the voltage always moves around or the intense magnetic field was interfearing with the meter. Ya once I was going to check the voltave and i didnt even touch the wire ind it saidm i was getting 700 volts. lol
I think you're right!.. The battery was dead in my metern I thought that was the cause because my other meter looked to be okay. I guess this meter really picked up the magnetic field... thanks for the info!
Nice build. Some improvements you might consider are a foot switch and a timer so the battery does not get as hot when spot welding.
valveman12 3 weeks ago
i have some question: how many voltage out from output ? and how value capacitor using with this welder? thx.
nero986 2 months ago
What is the purpose of the "red" and "white" wire? Is it two differant secondaries? if so how many turns each?
regards,
LLuE88 3 months ago
So, where exactly is the closest hospital?
MrMaypole14 5 months ago
anyone who has ever messed around with high voltage or high amp stuff, knows how much nerves it takes. Even when you are sure you did everything correctly and being safe it still takes a lot of guts.. You got balls man.. thanks for the video.
MichaelMantion 7 months ago
hi! i have cut and rewound my MOT with thick 2 gauge speaker wire and i was wondering if keeping the shunt in (small iron bar) would affect it's current output?
Because mine is still in and i want highest current output...
a380rockerfan 1 year ago
I guess you must be shy or something huh? Wish you'd have talked us thru it, what you did and why, and all that good stuff , at least for dummies like me who don't have much of a clue. I do need to do a tiny bit of spot welding, and my welder broke.
I wasn't much good at it anyway.
ICUC007 1 year ago
that looks like a very satisfying action; pulling the wire out of the secondary!
a380rockerfan 1 year ago
Can you make video Of How u put The Wires Together?
keiontaybrown 1 year ago
thats cool
soverato3 1 year ago
Ted Kaczynski would be proud.
faffaflunkie 1 year ago
no it is not as easy as it looks, i did this before, i took a LONG time to get the secondary out
ps. how many turns on the new secondary
YummyMercury 1 year ago
you might want to use a portable band saw on your next project insted of pliears....
774drego 1 year ago
some how I dont think it is entirely safe to spot weld things onto alkaline batterys. But this is still cool and I may want to try to make one of my own.
MrAwsome514 1 year ago
u need to make sure your meter was set to AC because we were running into that problem too...
thecactustree 1 year ago
No good, too much heat...
DeadeyeDick1 1 year ago
That takes way too long to weld. You can watch the entire top of the battery get red hot before the weld occurs. This should never be used on Lithium ions as they'll likely explode or die as a result. You need a capacitor or a battery bank to get the current and voltage you need to do a rapid battery tab weld. Otherwise, good video; very educational. Thanks!
horta12 1 year ago 6
You should look into getting a foot pedal from a sewing machine.
Grimreaper3600 1 year ago
Don't you have a voice? I can hear you making noises with your tools, etc., but it would be helpful if you could explain verbally what you are doing. Are you afraid to speak for some reason?
xrayrep 1 year ago
With that new foot switch you may wish to add a timer. This will allow you to have repeatable welds. Also that foot switch can be made from a limit switch and sme sort of pivoting device. The timer should be in seconds or less.
harleyghost 1 year ago
who is that is the sound track?
PERKINSPRODUCTIONS1 1 year ago
Question for you? I built one and have a 5v output. i can weld normal alkaline batteries but cant seem to weld a ni cad. my tabs burn holes and doesnt stick to the ni cad. any advice would be awsome. I am using tungstem tig tips for electrodes.
mudpuppyto 1 year ago
Id use capacitors in the tab welder.Gives a much more better result.This setup still seems to just weld them together with arc.Capacitor one would melt the metals from the spot you want to be welded.
Henzzman 1 year ago
great vid 5/5
TaNgLeD2121 2 years ago
hi there i am interested in building one
could you give me detailed instruction?
goodviews1 2 years ago
hi guys i bin playing a bit and find that coca cola cans are good to use as spot weld metal for battary terminals. i will post a DIV on this soon on my site.
ray0energy 2 years ago
what resistance do primary windings have...
megamarko94 2 years ago
sn't your wire of secondary winding does not have a sufficient section?
th4002 2 years ago
i made one easily from a 120v heat gun
MacsCanfly 2 years ago
just two words very and good
vik95170 2 years ago
Did your circuit breaker go off in the video? =(
BasementBen 2 years ago
how many amps do you estimate that it takes?
rroge5 2 years ago
your guess is better than mines.. i'm thinking 175 amps?? 1100 watt oven, 5.2 volt stepdown, not a good 10guage wrap on the secondary... better to just get an ammeter
hsurfah 2 years ago
how manny wraps 10 gauge u uses?
SthealthRaider 2 years ago
I think it's 4 wraps.
hsurfah 2 years ago
i use 4 wraps of welding wire my premier is using 6 to 8 amps 220vac. and on the 2e i have 3.5vac @ 300 amps!!!
ray0energy 2 years ago
why the fan?
rroge5 2 years ago
I didn't want to touch the bare, live switch while it was on... the fan made it easy to remember that the thing was on
hsurfah 2 years ago 2
a dont know why i hate this music
hanghoodiescum 2 years ago
very enjoyable to watch . Thanks!
soulwam 2 years ago
I dont know why but i like this music
hunterdanjones 2 years ago
Great video!!! I've been wanting to build a battery welder for a while now. You gave me some inspiration to do it......thanks
patlamb41 2 years ago
this is really cool 5 stars!!! it is something i will have to try!
twenglish1 2 years ago
OMFG i have the same transformer in my basement
greatwhitenorth112 2 years ago
Cool video. So it appears you were able to do this without a cap. Interesting...
rfjgfude 2 years ago
Nice video. what was the purpose of tacking the strips to the batteries?
junkman6261 2 years ago
That's how quality battery packs are made.
rfjgfude 2 years ago
yes, my purpose was to rebuild some dewalt packs... (I did only one so far)
hsurfah 2 years ago
what part of "NO SERVICEABLE PARTS" don't you understand???
MrPisster 2 years ago
lol he's not servicing , He's modifying,
Looks like that thing does a better Job than commercial units.
btwbrand 2 years ago
i dont see the capacitor you took out, and the motor you torn the magnatics out of the motor for the fan, so how is it the fan motor is running???
puapua53 2 years ago
I showed the shorting of the cap before removing it. I also showed a picture of keeping the cap shorted (caps could charge up on its' own and still bite). the magnets is from the magnetron (makes microwave radiation). fan motor is an inductive motor (no permanent magnet required).
hsurfah 2 years ago
I believe the magnets where from the magnetron. Generally small fans as these us shaded pole motors, a type of induction motor
westkan 2 years ago
I have a small hobby MMA welder (About 120A). Rather than hack a Microwave Oven transformer I was thinking of sticking a one shot timer (0.1 to 2 second) on the mains input (Triac switched) with a footswitch to trigger, then convert the electode holder and Earth Clamp into two small brass pointed rods for the spot weld. Do you think this would do the same job?
1113562 3 years ago
Sounds like a great project. Probably a much better setup than what I have here. I would invest in some alloy electrodes made for your app instead of the brass though. Probably need to do your homework on that part. Will you be posting your progress online? Share if you do! Aloha!
hsurfah 3 years ago
Hi There, thanks for your feedback on this. I'm torn between this solution or the big F off 600,000 uF Capacitor discharge type welder. The Capacitor option means quite an outlay on good low ESR Electrolytic Capacitors and a 50 A (2500 A peak) SCR although the Caps are the dearest part. Other than that though a variable bench DC power supply and a trigger circuit to fire the SCR is all that is basically needed. see continuation -->
1113562 3 years ago
If you have access to a bench PSU (this is used to Charge the Caps) then the expense for the Capacitor discharge welder is just the Caps and SCR. The arc welder idea is cheap if you have a basic MMA welding set to hand as the electronics is is relatively cheap. The biggish mains rated Triac is the main outlay. In all though its worth trying out the arc welder. I will share the results on You Tube for sure. see continuation 2-->
1113562 3 years ago
I'm interested to know what advantage Aluminium electrodes would have over Copper or Brass? Cu is a better conductor although Al is still OK about twice the resistivity, i.e. 28nOhm.m as opposed to 16.8nOhm.m for copper. Thats it!!!
1113562 3 years ago
Did you do a pull test to see if a nugget is left behind?
TheLightningStalker 3 years ago
I did pull one tab and there was a small nub but many did not leave behind anything. I think a larger gauge wire for the secondary and smaller hardened copper electrodes would be a better idea.
hsurfah 3 years ago
There is an easier way to remove the old secondary. I'll post a video one of these days.
TheLightningStalker 3 years ago
I've seen people hacksaw the seem on the mot and break out the secondary.
hsurfah 3 years ago
I have the exact same internals from the microwave I took apart recently..
A real bastard removing the primary. I ended up drilling it out. What a mess.
GrimChild24 3 years ago
^secondary I meant.
GrimChild24 3 years ago
Thanks for the comment. I also drilled, hammered, poked, and pried at it. I should have added that info for the folks that are trying to do this too.
hsurfah 3 years ago
you meter wasnt broken it the voltage always moves around or the intense magnetic field was interfearing with the meter. Ya once I was going to check the voltave and i didnt even touch the wire ind it saidm i was getting 700 volts. lol
juniortore 3 years ago
I think you're right!.. The battery was dead in my metern I thought that was the cause because my other meter looked to be okay. I guess this meter really picked up the magnetic field... thanks for the info!
hsurfah 3 years ago
TABulous ;)
eddiequest2 3 years ago