@@rich1051414 Transformers don't always work backwards. I think ElectroBOOM or Afrotechmods did an explanation, but it's some calculation with the coil's resistance and inductance, which you'll need some LCR meter to measure inductance for.
@@legoivan44321 aluminum conducts heat extremely well. you can weld it easy with any welder but you have to preheat it. otherwise you need a extremely powerful welder/laser. in pulses etc for thin aluminum or you'll burn right through it. it's notoriously hard to weld without the right equipment. ever notice on assembly lines when machine welding aluminum they are either doing it in pulses or moving extremely fast?
WARNING: Microwave ovens contain high voltage capacitors. Even when unplugged, these can kill you. DO NOT TAKE APART A MICROWAVE UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING!
@@genatools919 they can store electric charge at a high voltage for a long time. if randomly shorted they will quickly unleash all that electric charge really quickly resulting in very high current be it through you and potentially your heart or a pair of pliers depending on if you know what your doing. see the thing at 1:27 make sure you short the metal contacts inside those black cylindrical terminals with say a pair of pliers with insulated handles, don't touch the metal with exposed skin while doing this, this will short them mostly safely though watch out for sparks and maybe have a pair of safety goggles on and a multimeter if needed, this may not happen if the microwave has been unplugged for say months to a year. the capacitor discharges over time, but if the microwave was recently plugged in it is very dangerous as the capacitor could potentially hold enough charge to kill you. also having a multimeter handy even a cheap one to double check the voltage across the terminals after shorting and see if there is a any leftover charge still to see if it was discharged properly.
You need at least 30-36 volts to do any arc welding. You can stick weld at as low as 60-70 amps, but you need the voltage to get the arc going and maintain it. I think you'd need 2 transformers for it. Maybe re-visit this project later? Your videos are very informative!
possibly the 2 volt transformer as an energy source and a 2000 volt transformer to ignite the arc -> The 2000 volts ionize the air between the plate and the electrode, and the resulting arc could then tile the 2 volts with a few 100 amps
Generally high frequency is used at a lower more safe voltage. No matter what you do, 2000V from a 2kVA transformer will kill you. At 220V our skin resistance and dielectric permiability is usually enough to not kill us. But at 2kV everything is possibile.
"someone who knows how to weld" is the key here. It took me ages to learn how to lay a proper bead and I was using a very nice welder. Welding is one of the few things that require a developed skill in addition to knowledge.
seriously it's very hard to learn how to weld professionally.. i could weld pretty decently.. but in terms of having a perfect solid bead line is really hard.. i usually just rectify my welds by grinding it and rewelding the areas with holes.
be aware to discharge the high voltage capacitor before you start messing inside the microwave. also the magnetron may contain beryllium oxide which is very dangerous once you break it apart and inhale dust of it. only mess with microwaves if you know what you are doing.
he just took out the transformer. the magnetron never was seen here and as these microwaves propably came from a scrapyard there's really not that high of a chance that the capacitor still has a restcharge. Afterall you are surely right; generally don't mess with high voltage, radiation, toxic substances or massive heat if you don't actually know what you are doing. I just got the feeling this guy at least has the not very complicated knowledge on how to not shock himself to death.
That is a myth ; the capacitor in microwave ovens has a 10 Meg ohm bleeding resistor. The voltage, if any, fall to safe level in a few minutes. If the microwave was working, the magnetron would have discharged the capacitor as part of normal cycle because it is used as voltage doubler. It completely discharge and charge on each polarity inversion of AC ; 100 or 120 times per second. The real danger is if you try to create a microwave gun, exposing the magnetron to open air. I got my worst electric shock ever that way ; much more scary than the electric arc from the 25 kv of CRT.
No still not enough voltage. Even a small home welder has an output of around 12 - 30 volts. To get this you would need more secondary windings which means smaller guage wire. Then the wire gauge would be too small to carry the necessary current without melting. Only solution here honestly is a larger transformer core which would allow the large gauge secondary coil while still providing the space to have the additional turns.
Dear Scott: You mentioned that the output voltage of the 2nd design is about 8 volts. My late husband was an auto mechanic and in his shop the arc welders ran around 24 volts. I am suggesting a 24v design. Hope this helps.
sorry, but just to be precise, in order to weld aluminium properly, He will need more than only setting a voltage higher. The aluminium welding require a TIG transformer, a protective atmosphere on the welding spot (with some noble gases) and a AC current. It is quite hard welding aluminium, they do so only when it can't be avoided.
I find it fun and interesting, that when I watched this in high school I had no idea what was being explained, and 6 years later approaching grad school and I can look back on this like "woah I know all of this now" lol
Trying to weld Aluminium without welding experience with a homemade welder is VERY ambitious, as others have pointed out (not that that's necessarily a bad thing). I'm not a professional welder, but I have a little bit of experience with WIG/TIG welding and the theory behind it, so I wanted to point out some things I noticed (some of which others have already pointed out, but I'll repeat them for completeness). First off, even experienced Welders often don't enjoy welding Aluminium. This is due to the oxide layer which forms on the surface and has a higher melting point than the unoxidized Aluminium below it. As a result, you'll have a puddle of molten Aluminium, between the surface layers, which will simply run away once the surface melts. This is normally alleviated by preparing the surface with a wire brush or similar, removing the oxide layer (which will form again very quickly, so timing is key there). Another trick is welding with AC (normally, TIG welding is DC with the Workpiece as the Anode, because the part receiving the electrons gets hotter), which will help breaking up the oxide layer with the changing current direction. The third problem you have would be the missing inert atmosphere, which would prevent new oxide from forming during the welding and keep the weld pool stable. On general welding: I have no experience with this personally, because my Inverter has a HF-Starter, but as far as I know, starting an arc without HF is quite skill intensive ("Streichzündung" in german). I think you have to touch the electrode to the workpiece for the current to flow, and then lift it at the right time for the arc to form (but as I said, no experience). Also, for a stable arc, you need to roughly maintain the distance between workpiece and electrode, which can be pretty hard if your electrode melts off (like it does with stick welding) and damn near impossible if it quickly melts away (like your aluminium filler wire). This problem is increased by AC welding, because as mentioned above, the part receiving electrons gets hot. With all this being said, my recommendation would be a design change to steel. If you put a steel sleeve over the axle and fasten it with the screw, it should have no problem taking the load. Then you can weld your motor mount (made out of steel) to this steel sleeve. Keep up making these awesome videos! PS: If you happen to live in southern germany and want to practice welding with a commercial inverter, you can shoot me a pm.
Welding requires at least a minimum of 24 volts. The weld is created by the amperage but also the the potential difference between the the electrodes. It will also help reduce loss if you keep the secondary coil as close to the core as possible.
lol i love how this guy always "finds" household appliances and other stuff.. waiting for him to say "so guys look what I found to play with, a nuclear reactor!"
I would recommend you put some more turns on the secondary. Aim for around 26 volts AC output. Then use a full bridge rectifier and a filter capacitor of sufficient rating to convert the ac power to a smoothly rectified DC output, which is almost mandatory for aluminum and recommended for steel.
Aluminum forms a layer of oxide which has a much higher melting temperature than the aluminum itself. This means that getting a weld to start is really hard on aluminum. 60 - 70 amps at most voltages should work with most other metals like steel.
You first attempt with the 70mm^2 wire might have worked as a spot welder. MMA welding uses about 40 Volts. It is also possible that a thin oxide layer on the aluminium may have increased the resistance enough to severely limit the current.
I don't think it would do anything, if you research about transformers there has to be a conductive core for the wires to wrap around so putting them in series would do the exact same thing but in smaller steps. I think what he needs is a bigger transformer to start with
123crispychicken123 Trust me, i'm an engineer! It would double the output power and voltage. You need about 30V to sustain an arc for welding. So probably he needs to quadruple the voltage.
it barley welds steel never mind aluminum, it uses welding electrodes the size of paper clips and it does this at a 5% duty cycle, it's funny your profile pic makes you look sophisticated cough*...nark
Hey Scott, the maximun power of a transformer is its area^2 and you can get more from the wall plug, you Just need to connect the primary coils of two transformers or maybe 3 in parallel and the outputs in series with that you can get like 24 volts or near and that works pretty well, I have a welder and know to weld but I made one a time ago and works pretty fine byee
John Michael Stock He added that to make it clear that it was an innocent question, and not a challenge to another user's comment. Or did you miss that when you were instructing him on punctuation? ;-)
amazing work - for aluminum people emit argon (and I think some use nitrogen) gas on the weld area because otherwise aluminum oxidizes very quickly before a clean weld can form.
Dear Greatscott, Thank you very much for giving us Directions for our DIY projects through your experiments .. I thought simply we can make a welder with a microwave transformer as per lot of peoples tutorials. Thank you for Directing.
The courrent is AC For soldering the better courrent is dc courrent. You can convert ac from dc with a big diode bridge, (Over 100 A) and reapeat that experiment
Arc welding is a fair bit higher voltage, enough to feel. I was subjected to this as a kid holding up an angle iron piece for my father to weld, however the ground was attached to the frame, not my piece. So as i moved fractionally to disconnect the circuit, I became the circuit. It was very mild compared to 240v AC. I would hazard a guess at 50v
i would like to see a link to the US$600 that can weld aluminium. also GreatScott should have tried reversing his polarity. the aluminium "electrodes" he was using was actually filler wire for the GTAW (TIG) process, totally different from SMAW (stick welding). also side note, most popular welding process are arc welding: GTAW = Gas Tungsten Arc Welding, GMAW = Gas Metal Arc Welding FCAW = Flux Cored Arc Welding SMAW = Shielded Metal Arc Welding. TLDR stick welding aluminium is possible, you just need the correct electrodes and polarity.
Andrew S yeah, but dremels are cheap and look ugly. I've been looking for an alternative. I actually already ordered a Proxxon from Amazon Germany, and it works great! Cheaper than a Dremel in Europe, too.
As others have point out, aluminium is tough to weld. One of the reasons is that it conducts heat mad well, so it takes a lot of power to get it hot enough to weld.
the "Grant Thompson King of random" alredy show how to make a stick welder, a spot welder and this one i done on the first try! só i recomend you to go to his Channel and see how he do it!
I made it as well. It does weld, however they overheat after too much welding. I am planning to use 4 transformers instead of two. Same power, same output voltage, but more robust construction! ;-)
+CroW Fuguetero If you didn't notice, the King of Random tried welding steel, Great Scott is trying to weld aluminium, which are two completely different kinds of metal. You can't weld aluminium without a protective atmosphere, so stick-welding is out of the question in the first place.
I'm actually really disappointed about how many comments there are from people who don't know what electromagnetic induction is and don't know how transformers work...come on, that's basic middle school science!
Ri5ux No, I clearly remember learning about electromagnetism in 8th grade, and my science teacher even brought in a small hand cranked generator and a transformer and we were learning about how they worked. So yes, this is all really basic stuff that even a 13-14 year old kid could understand. You must be a Millennial. The Emo Generation thinks it's "cute" to be stupid.
ct92404 - High School Freshman here, been taking advanced/honors classes since they were available; I can confirm that we are not taught about electromagnetic induction and/or transformers.
ct92404 But transformer theory can be hard as hell, specially Faraday's law and things like that, it's very odd to see children learning when differential equations appear.
Blink Guy1324 I'm not even talking about anything that complex. I'm just talking about the simple concept of induction and how transformers work on a basic level - that energy is transferred from one winding to another by an electromagnetic field. I learned about that in middle school physical science. In fact, I clearly remember my 8th grade science teacher showing a small hand crank generator that generated alternating current and he was explainng "frequency" to us. I remember it suddenly dawned on me that the lights in the room should actually be flashing at 60 times per second because the power system works on 60 Hertz AC. He said they were, and it was just that it was too fast for our eyes to see, and so the light looks continuous. I thought at the time that was really weird but fascinating. I remember later that same week he brought in a small transformer. It was all part of a lesson we were learning on electricity and magnetism. So if I was learning about this in school when I was around 13 years old, I honesty don't get why ADULTS here don't know anything about it at all. Like I said though, it's probably because everything has been dumbed down for the Millennials.
Welding 1/8“ aluminum plate often requires 90-140 amps, depending on the type of welding used and the overall size of the part being welded. 1/4“ aluminum can take up to 250 amps or more to weld. This is because aluminum conducts and dissipates heat very quickly, so it takes enormous amounts of heat just to heat aluminum up to it’s melting point. Secondly, high amperage current doesn’t like to arc up, so a high voltage current may be needed to strike an arc. With stick welding, you „strike“ an arc just like striking a match. Thirdly, molten metal will oxidize (burn) if exposed to oxygen while welding, so you either need a shielding gas such as argon or helium to displace all oxygen from the weld area, or special flux-coated electrodes (the flux burns and produces carbon dioxide and carbon monoxide, which shield the weld from the oxygen in the atmosphere). That being said, I have seen videos of people welding things with microwave transformers, so it can definitely be done. Small briefcase-sized welding machines can be found for a couple hundred dollars though, so it might be better to spend the extra money on a proper welding machine.
the voltage for welding is usually in the 20 or higher volts. you might need 2 microwave transformers with the output in series.the higher the voltage the better and easier it is to get a arc .
Most arc welding starts out at 20v and 50a minimum, the aluminum electrode wasn't really a welding electrode but a filler rod for tig welding, an arc welding electrode needs a flux coating
Although welding machines have such a high variability in power ratings, the voltage required for most is 20--30 volts...some processes are AC 0r DC, and some machines offer both. The variance however, comes in the amperes that can be delivered....the higher the amps, the thicker capacity of metal that can be joined. Additionally, there are processes that require a power supply capable of providing constant voltage or constant current. There are so many people with the youtube mentality that if it is broadcasted it must be ok to do; dismantling a microwave is not among the things that most you tubers could do safely....as mentioned in the concerns below.
I've got an old microwave ,and would like to strip it down and experiment with the magnetron and the transformer but I'm not an electrician or a electronic engineer .so I would probably end up being killed or blowing the house up so I just enjoy watching professionals do it on TH-cam !
Transformers create a ratio, which will be insufficient until you parallel a phase. Or in layman's terms, use the output of one transformer to feed another transformer (making it primary feeding secondary) it's output will increase voltage allowing weld output.
Why surge protector strips are useless with microwave transformers: FYI: Additional safety information here: Make Lichtenberg wood art safely on the youtube channel of bigclivedotcom. At 2:09 he begins a detailed diagram including how regular power surge suppressors are not able to cut the power on microwave transformer jolts. He talks like an engineer and has very technical explanations as to why he says to never use a microwave transformer. Kids have died using these devices outside their intended use.
To draw the arc you need around 50V and then enough current available to properly heat the work. Aluminum requires helium as an inert gas envelope to prevent oxidation. (Heliarc)
Given the amount of people who have watched this, the time duration in which the video has been up, and the amount of people statistically killed by electrocution via microwave oven components (and the entire lack of safety notice in this video) It can be determined this video itself has likely caused between 2 and 12 deaths from people who have watched and attempted something similar.
Aluminum is usually welded in an oxygen free atmosphere as in heli-arc using helium gas. In a tig machine the gas is fed to the arc along with the welding rod. High current is more important than high voltage as the current determines the amount of heat that can be produced at the working area. You don't need to draw four inch sparks, nor should you want to, but you do want to heat the metal you are working on so that it melts together with the rod at the joint. I'm only a very novice welder, please correct any errors.
I’m a little late to the game.
Welder here. Stick welding needs about 34 volts to work properly.
240 / 8.6 = 28v
Why didn't he just run the transformer the other way around?
@@rich1051414 Transformers don't always work backwards. I think ElectroBOOM or Afrotechmods did an explanation, but it's some calculation with the coil's resistance and inductance, which you'll need some LCR meter to measure inductance for.
@@NoorquackerInd It would also turn it into a low current not-so-high voltage transformer
@@legoivan44321 aluminum conducts heat extremely well. you can weld it easy with any welder but you have to preheat it. otherwise you need a extremely powerful welder/laser. in pulses etc for thin aluminum or you'll burn right through it. it's notoriously hard to weld without the right equipment. ever notice on assembly lines when machine welding aluminum they are either doing it in pulses or moving extremely fast?
@@rich1051414 the wire is maybe just too thin to be running the other way around.
WARNING: Microwave ovens contain high voltage capacitors. Even when unplugged, these can kill you. DO NOT TAKE APART A MICROWAVE UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING!
No
No
How?
@@genatools919 they can store electric charge at a high voltage for a long time. if randomly shorted they will quickly unleash all that electric charge really quickly resulting in very high current be it through you and potentially your heart or a pair of pliers depending on if you know what your doing. see the thing at 1:27 make sure you short the metal contacts inside those black cylindrical terminals with say a pair of pliers with insulated handles, don't touch the metal with exposed skin while doing this, this will short them mostly safely though watch out for sparks and maybe have a pair of safety goggles on and a multimeter if needed, this may not happen if the microwave has been unplugged for say months to a year. the capacitor discharges over time, but if the microwave was recently plugged in it is very dangerous as the capacitor could potentially hold enough charge to kill you. also having a multimeter handy even a cheap one to double check the voltage across the terminals after shorting and see if there is a any leftover charge still to see if it was discharged properly.
🤓
You need at least 30-36 volts to do any arc welding. You can stick weld at as low as 60-70 amps, but you need the voltage to get the arc going and maintain it. I think you'd need 2 transformers for it. Maybe re-visit this project later? Your videos are very informative!
possibly the 2 volt transformer as an energy source and a 2000 volt transformer to ignite the arc -> The 2000 volts ionize the air between the plate and the electrode, and the resulting arc could then tile the 2 volts with a few 100 amps
@@schwarzestigerle3300 That would be a deadly welder.
@@zanpekosak2383 if it doesn't fry itself. could be useful tho.
Generally high frequency is used at a lower more safe voltage. No matter what you do, 2000V from a 2kVA transformer will kill you. At 220V our skin resistance and dielectric permiability is usually enough to not kill us. But at 2kV everything is possibile.
He also has the wrong frequency for aluminum
I'm a video and this welder kills me
*welder, but he tried to make it. I agree that the welder is bad.
Edit: I just got the joke
@B3X ??????????????????????????????????????????????????????
@@martinsindans1341 whoooooooooosh
Hahah
wait i dont understand
"Capaciturrrrrr"
Never gets old
Aluminum is really hard to weld - recommend trying iron or steel for your next attempts
yeah you are right, steel is lot easier but he needs aluminium for his skateboard ...:/
he can use 2 transformers :))
+Adam Budai yeah in series but aluminium will still be hard to weld xD
aluminium is like cancer
He needs to practice first, that's why is Afrotechmods sugesting steel first
he needs much bigger transformer for steel)))
"someone who knows how to weld" is the key here. It took me ages to learn how to lay a proper bead and I was using a very nice welder. Welding is one of the few things that require a developed skill in addition to knowledge.
practice a couple of days and you can weld ;)
seriously it's very hard to learn how to weld professionally..
i could weld pretty decently.. but in terms of having a perfect solid bead line is really hard..
i usually just rectify my welds by grinding it and rewelding the areas with holes.
be aware to discharge the high voltage capacitor before you start messing inside the microwave. also the magnetron may contain beryllium oxide which is very dangerous once you break it apart and inhale dust of it. only mess with microwaves if you know what you are doing.
he just took out the transformer. the magnetron never was seen here and as these microwaves propably came from a scrapyard there's really not that high of a chance that the capacitor still has a restcharge.
Afterall you are surely right; generally don't mess with high voltage, radiation, toxic substances or massive heat if you don't actually know what you are doing. I just got the feeling this guy at least has the not very complicated knowledge on how to not shock himself to death.
I took apart a microwave when I was 12 in my backyard. I'm still alive. You'll be fine
That is a myth ; the capacitor in microwave ovens has a 10 Meg ohm bleeding resistor. The voltage, if any, fall to safe level in a few minutes.
If the microwave was working, the magnetron would have discharged the capacitor as part of normal cycle because it is used as voltage doubler. It completely discharge and charge on each polarity inversion of AC ; 100 or 120 times per second.
The real danger is if you try to create a microwave gun, exposing the magnetron to open air. I got my worst electric shock ever that way ; much more scary than the electric arc from the 25 kv of CRT.
I took apart an old TV when I was like 6
th-cam.com/video/0XbLz0L6UdI/w-d-xo.html
those aluminum electrodes are for Tig welding, used as filler rod. which is completely different from stick welding
thanks it was hilarious watching him trying to use filler rod as the electrode😂😂
wait what? would it have worked with the proper electrode??
No still not enough voltage. Even a small home welder has an output of around 12 - 30 volts. To get this you would need more secondary windings which means smaller guage wire. Then the wire gauge would be too small to carry the necessary current without melting. Only solution here honestly is a larger transformer core which would allow the large gauge secondary coil while still providing the space to have the additional turns.
Or of course as other people have mentioned... Run 2 of the transformers in series to double the output voltage.
Anthony Sigman thank you im in my second year of my apprenticeship right now so i found that explanation very informative
3:22 we are going to make a SHUNT (any electroboom viewers?)
@@seeeyes12212 it is shunt.
A store bought welder would be safer and more effective but where is the fun in that?
this way is cheaper and funnier 😂
It looks bloody fun in the video dont you agree? I am tempted to disassemble my microwave now
if you agree with yourself why the fuck you post that comment in the first place
who the hell are you talking to im not insulting yself you are mate
superhacker35 im not talking to you man
Dear Scott: You mentioned that the output voltage of the 2nd design is about 8 volts. My late husband was an auto mechanic and in his shop the arc welders ran around 24 volts. I am suggesting a 24v design. Hope this helps.
sorry, but just to be precise, in order to weld aluminium properly, He will need more than only setting a voltage higher. The aluminium welding require a TIG transformer, a protective atmosphere on the welding spot (with some noble gases) and a AC current. It is quite hard welding aluminium, they do so only when it can't be avoided.
use both the transformers together
That's an overkill
@@mathewtallen3190 Nah
Smart
Paralell or in series?
@@casperdh i think series
Very rare video of failures. That saves a ton of time for others who want to do the same. And this is a valuable lesson. Thanks for posting.
I find it fun and interesting, that when I watched this in high school I had no idea what was being explained, and 6 years later approaching grad school and I can look back on this like "woah I know all of this now" lol
See what Photonicinduction has to offer on transformers.
How to weld planets together.
absolutely love that channel
Yes,he help:)i love that chanenel too..
i'm always surprised to go back to his channel every now and then, and see him still alive making videos
GateCrasherVI pppppapq
Trying to weld Aluminium without welding experience with a homemade welder is VERY ambitious, as others have pointed out (not that that's necessarily a bad thing). I'm not a professional welder, but I have a little bit of experience with WIG/TIG welding and the theory behind it, so I wanted to point out some things I noticed (some of which others have already pointed out, but I'll repeat them for completeness).
First off, even experienced Welders often don't enjoy welding Aluminium. This is due to the oxide layer which forms on the surface and has a higher melting point than the unoxidized Aluminium below it. As a result, you'll have a puddle of molten Aluminium, between the surface layers, which will simply run away once the surface melts. This is normally alleviated by preparing the surface with a wire brush or similar, removing the oxide layer (which will form again very quickly, so timing is key there). Another trick is welding with AC (normally, TIG welding is DC with the Workpiece as the Anode, because the part receiving the electrons gets hotter), which will help breaking up the oxide layer with the changing current direction. The third problem you have would be the missing inert atmosphere, which would prevent new oxide from forming during the welding and keep the weld pool stable.
On general welding: I have no experience with this personally, because my Inverter has a HF-Starter, but as far as I know, starting an arc without HF is quite skill intensive ("Streichzündung" in german). I think you have to touch the electrode to the workpiece for the current to flow, and then lift it at the right time for the arc to form (but as I said, no experience). Also, for a stable arc, you need to roughly maintain the distance between workpiece and electrode, which can be pretty hard if your electrode melts off (like it does with stick welding) and damn near impossible if it quickly melts away (like your aluminium filler wire). This problem is increased by AC welding, because as mentioned above, the part receiving electrons gets hot.
With all this being said, my recommendation would be a design change to steel. If you put a steel sleeve over the axle and fasten it with the screw, it should have no problem taking the load. Then you can weld your motor mount (made out of steel) to this steel sleeve.
Keep up making these awesome videos!
PS: If you happen to live in southern germany and want to practice welding with a commercial inverter, you can shoot me a pm.
Lol explanation is too big
Welding requires at least a minimum of 24 volts. The weld is created by the amperage but also the the potential difference between the the electrodes.
It will also help reduce loss if you keep the secondary coil as close to the core as possible.
lol i love how this guy always "finds" household appliances and other stuff.. waiting for him to say "so guys look what I found to play with, a nuclear reactor!"
I would recommend you put some more turns on the secondary. Aim for around 26 volts AC output. Then use a full bridge rectifier and a filter capacitor of sufficient rating to convert the ac power to a smoothly rectified DC output, which is almost mandatory for aluminum and recommended for steel.
love ur videos dude..
Thanks mate
this is strangely similar to grant Thompson's video... coincidence? ( ͡° ͜ʖ ͡°)
+GreatScott! awesome awesome AWESOME
+chems Greatscott's videos are quite understandable as well as neat!
Not Really.
why do u end the vid so fast me wanna see coin getting rekt
lol +1
saame that's why i disliked the video.
sak sezo i think that coin was hot enough to not conduct electrycity anymore. This would not be fun to watch
Henninger Henningstone nope why do you think superconductors are -271°C
Skrub lord isnt destroying money illegal?
go to grand thompson he has a video on that
Grant*
+Ishank Mahale oh thx ;)
Grand Thompson? Great Scott!!
And did it better... Love GreatScott but that's a fact.
+raf zan in welding questions only Colin Furze is expert))
One of the best about Great Scott he doesn't make fake videos.
Scot: shows a clip in which he welds a metal sheet
Also scot : will i be able to veld
"...showed a bit more potential..."
lel
@@seeeyes12212 shut up
@@seeeyes12212 no bitch lel
@@seeeyes12212 go fuck of kid
Fuck me i was waiting for the skateboard to be welded but nope.
Aluminium is quite difficult to weld, especially for a beginner. Have you tried welding just regular steel?
No, but I will try other materials soon.
Aluminum forms a layer of oxide which has a much higher melting temperature than the aluminum itself. This means that getting a weld to start is really hard on aluminum. 60 - 70 amps at most voltages should work with most other metals like steel.
+Khurram Aziz protective argon atmosphere also needed.
Haha. I learned how to weld with aluminum
+GreatScott! Are you from Germany ?
I love that you don't just cherry pick the projects that work out to post.
You first attempt with the 70mm^2 wire might have worked as a spot welder. MMA welding uses about 40 Volts. It is also possible that a thin oxide layer on the aluminium may have increased the resistance enough to severely limit the current.
hehehe hungarian text on the sticker :D
LOL nem vetem észre elsőre :))
+Adam Budai :-D jó látni hogy nem én vagyok itt az egyetlen magyar :-D
Nekem is feltűnt:D
én viszont még mindig nem látom :/
Megvan! :D
0:57
Let's all donate to buy him a tig welder
No
@@arturoescalant7 You make a good point.
If you are doing this make sure you discharge the capacitor!
“Luckily, I got this microwave a while back...”
-Great Scott!
You are educational and entertaining!!!
Posting your failures is very educational because now I know what NOT to do.
You tried arc welding with high current whereas high current is for resistance welding. (And high voltage for arc welding)
sorry, but I have never seen someone welding with high voltage. It would be like welding something with a lightning, totally unsafe.
Rewind the first one and put them in series.
I don't think it would do anything, if you research about transformers there has to be a conductive core for the wires to wrap around so putting them in series would do the exact same thing but in smaller steps. I think what he needs is a bigger transformer to start with
123crispychicken123 Trust me, i'm an engineer! It would double the output power and voltage. You need about 30V to sustain an arc for welding. So probably he needs to quadruple the voltage.
Look at Grant Thompsons video, he does it successfully with 2 transformers.
it barley welds steel never mind aluminum, it uses welding electrodes the size of paper clips and it does this at a 5% duty cycle, it's funny your profile pic makes you look sophisticated cough*...nark
nope although his employment of a engineer is questionable hes still right btw if you don't know what the big words mean don't use them
Hey Scott, the maximun power of a transformer is its area^2 and you can get more from the wall plug, you Just need to connect the primary coils of two transformers or maybe 3 in parallel and the outputs in series with that you can get like 24 volts or near and that works pretty well, I have a welder and know to weld but I made one a time ago and works pretty fine byee
With one transformer you are probably just getting 900 or 800 W
And get you a welder mask, for God
Why add "just asking" at the end of your sentence when it's clear you're asking a question? If in doubt, use a question mark.
John Michael Stock
He added that to make it clear that it was an innocent question, and not a challenge to another user's comment. Or did you miss that when you were instructing him on punctuation? ;-)
amazing work - for aluminum people emit argon (and I think some use nitrogen) gas on the weld area because otherwise aluminum oxidizes very quickly before a clean weld can form.
My favorite channel right here
use 2 of them in series they will surely work
King of random lied us all!
He used way more turns, like 2 times 30
He knows how to weld :D
Okay, ^this too :D
this guys english voice is so cool sounding.
Dale Wentworthson bc he is a german guy
Dear Greatscott,
Thank you very much for giving us Directions for our DIY projects through your experiments ..
I thought simply we can make a welder with a microwave transformer as per lot of peoples tutorials.
Thank you for Directing.
My wife was upset she didn't get my life insurance when I discharged the cap
5:42 Love this part coin hitting up,toss a coin to your Witcher
The courrent is AC
For soldering the better courrent is dc courrent.
You can convert ac from dc with a big diode bridge, (Over 100 A) and reapeat that experiment
Three car batteries in series will work as a great welder
#1000A
From using truck batteries for welding, I have found that 36 volts does fine, any voltages under 36 makes it hard to maintain any weldable arc
If you spray lemon juice on the aluminum prior to trying to weld or solder it, it keeps it from oxidizing.
HACKED!: Microwave Transformer becomes a High Current Transformer
The name of the video yes
@Honestly, I don't even know when did I wrote this comment 🤣
Wow !!!! You are good at physic.
Ri5ux IDK..! 😢
How to call the fbi without a phone
lmao
how
Gorb Locke watch anime. You know that you are looking at the right stuff when you hear the sirens .
how to die a quick, horrible, high amperage death: an online tutorial
Don't have a welding machine?
Just break your microwave ;)
FYI this is a failed attempt. so decide if you still wanna watch
rrrohan2288 it looked like the ground location sucked
I cry, if I see how you kill coils.
pretty sure you saw grant thompson's video before making this
it seems you improved on it though
damn
mixed up youtubers for a second there
Arc welding is a fair bit higher voltage, enough to feel. I was subjected to this as a kid holding up an angle iron piece for my father to weld, however the ground was attached to the frame, not my piece. So as i moved fractionally to disconnect the circuit, I became the circuit. It was very mild compared to 240v AC. I would hazard a guess at 50v
Hi Scott! This was really funny!
Is 2019 any upgrade avalible :) ?
No it's 2020 and bupkiss
Türkçe altyazı ekleyen Adam gibi Adama selamlar.
Ooga booga?
Do you even understand how welding works? 😂 trying to stick weld aluminum lmao
Sure he was using tig filler but they do make aluminum stick electrodes they are expensive and are used mostly for field repairs
Your honesty is awesome!
Lel this guy is such a brave, salvaging the toxic magnetron is dangerous but this guy did a do, that's amazing
combine the 2 transformers together then they will work trust me
connect them in series
why should we trust you
+Isaac Thomson Because mahammed knows how to build bombs. He's obviously an expert in such things :^)
i'vekilledrachel woooow racist shit
PirateKitty no i didn't how would u know anyways
kudos for a well constructed sentence m8
Nice tinkering and everything, but you do realise you cant stick weld aluminium dont you?
You can. But not the way I tried it.
GreatScott! you can weld stick weld it. but it needs flux. not that filler you were using. and why waste your time. buy a welder 600 american dollars
i would like to see a link to the US$600 that can weld aluminium. also GreatScott should have tried reversing his polarity. the aluminium "electrodes" he was using was actually filler wire for the GTAW (TIG) process, totally different from SMAW (stick welding).
also side note, most popular welding process are arc welding: GTAW = Gas Tungsten Arc Welding, GMAW = Gas Metal Arc Welding FCAW = Flux Cored Arc Welding SMAW = Shielded Metal Arc Welding.
TLDR stick welding aluminium is possible, you just need the correct electrodes and polarity.
^ and inert gas or flux
Dave Joyce you do realize he's welding on AC, right?
@GreatScott, are you from germany?🇩🇪
Yes
You are my favourite youtuber!! You are a very good inventer!! ;))
+JoergSprave and +GreatScott! should team up and create something extremely dangerous.
RektSkrubs A slingshot that shoots tasers.
Anton Tisch habe ich auch gedacht
Love this! I hope tho he mentioned how many A is produced for the 2nd attempt. Perhaps showing a Computation as well
*_I CAN'T BELIEVE I DIDN'T KNOW ABOUT THIS CHANNEL-SUBSCRIBED!!!_*
How is it hacked if you didn't get the result you wanted?
I really hoped for a result that worked.
The title says "High current transformer". That worked out.
Ok, that's true :)
I didn't mean any offense, I hope you didn't take as such :)
Laziter73
Laziter73 if you want to see a result come out as working, check out The King Of Random.
Ismt tis incredibly dangerous?
Not if you know what you are doing. But don't try to replicate it anyway ;-)
GreatScott!
yea, but even though you know what youre doing, you still risk being electrocuted, no?
bjorn hettema
Not really
+GreatScott! Oh nvm then!
no really you can touch it it's so low voltage
What kind of rotary tool did you use?
Proxxon IBS/E
Doctor Worm You can pickup a dremel at your local hardware store.
Andrew S yeah, but dremels are cheap and look ugly. I've been looking for an alternative. I actually already ordered a Proxxon from Amazon Germany, and it works great! Cheaper than a Dremel in Europe, too.
Damn I don’t know a lot about this but the things he do is super dangerous, but he really knows what hes doing.
As others have point out, aluminium is tough to weld. One of the reasons is that it conducts heat mad well, so it takes a lot of power to get it hot enough to weld.
the "Grant Thompson King of random" alredy show how to make a stick welder, a spot welder and this one i done on the first try!
só i recomend you to go to his Channel and see how he do it!
CroW Fuguetero I have a feeling he copied him if I am wrong then sorry
I made it as well. It does weld, however they overheat after too much welding. I am planning to use 4 transformers instead of two. Same power, same output voltage, but more robust construction! ;-)
+CroW Fuguetero If you didn't notice, the King of Random tried welding steel, Great Scott is trying to weld aluminium, which are two completely different kinds of metal. You can't weld aluminium without a protective atmosphere, so stick-welding is out of the question in the first place.
I'm actually really disappointed about how many comments there are from people who don't know what electromagnetic induction is and don't know how transformers work...come on, that's basic middle school science!
Ri5ux No, I clearly remember learning about electromagnetism in 8th grade, and my science teacher even brought in a small hand cranked generator and a transformer and we were learning about how they worked. So yes, this is all really basic stuff that even a 13-14 year old kid could understand. You must be a Millennial. The Emo Generation thinks it's "cute" to be stupid.
ct92404 - High School Freshman here, been taking advanced/honors classes since they were available; I can confirm that we are not taught about electromagnetic induction and/or transformers.
Yt Red Wow. I guess they've really dumbed down science lessons. Probably to make it easier for the air-headed Millennials. How sad.
ct92404 But transformer theory can be hard as hell, specially Faraday's law and things like that, it's very odd to see children learning when differential equations appear.
Blink Guy1324 I'm not even talking about anything that complex. I'm just talking about the simple concept of induction and how transformers work on a basic level - that energy is transferred from one winding to another by an electromagnetic field. I learned about that in middle school physical science. In fact, I clearly remember my 8th grade science teacher showing a small hand crank generator that generated alternating current and he was explainng "frequency" to us. I remember it suddenly dawned on me that the lights in the room should actually be flashing at 60 times per second because the power system works on 60 Hertz AC. He said they were, and it was just that it was too fast for our eyes to see, and so the light looks continuous. I thought at the time that was really weird but fascinating. I remember later that same week he brought in a small transformer. It was all part of a lesson we were learning on electricity and magnetism. So if I was learning about this in school when I was around 13 years old, I honesty don't get why ADULTS here don't know anything about it at all. Like I said though, it's probably because everything has been dumbed down for the Millennials.
.me kills video this and welder a I’m
Fuck you guys
@@giedrius2149 u on
Welding 1/8“ aluminum plate often requires 90-140 amps, depending on the type of welding used and the overall size of the part being welded. 1/4“ aluminum can take up to 250 amps or more to weld. This is because aluminum conducts and dissipates heat very quickly, so it takes enormous amounts of heat just to heat aluminum up to it’s melting point.
Secondly, high amperage current doesn’t like to arc up, so a high voltage current may be needed to strike an arc. With stick welding, you „strike“ an arc just like striking a match.
Thirdly, molten metal will oxidize (burn) if exposed to oxygen while welding, so you either need a shielding gas such as argon or helium to displace all oxygen from the weld area, or special flux-coated electrodes (the flux burns and produces carbon dioxide and carbon monoxide, which shield the weld from the oxygen in the atmosphere).
That being said, I have seen videos of people welding things with microwave transformers, so it can definitely be done. Small briefcase-sized welding machines can be found for a couple hundred dollars though, so it might be better to spend the extra money on a proper welding machine.
I always love your videos!
Or you could... you know..
Buy a fucking weld tool and helmet? 😂 cool idea though bro
Jesus jesus sweared im ded
You got fucking wrecked 2000 years ago.
Jesus he probably had a helmet
Lol! Dude you know darn well there are easier ways to make an arc welder. You just wanted to play with that microwave transformer. Love your videos.
Seeing Great Scott. Liked instantly
Super video and sound quality.
Welding aluminum is hard af due to the low melting temp.
Also you're a mad man and please tell me you had a welding mask.
I haven't seen a microwave so clean inside before. I want to meet one.
the voltage for welding is usually in the 20 or higher volts. you might need 2 microwave transformers with the output in series.the higher the voltage the better and easier it is to get a arc .
Most arc welding starts out at 20v and 50a minimum, the aluminum electrode wasn't really a welding electrode but a filler rod for tig welding, an arc welding electrode needs a flux coating
"...and I needed a weld, so I grabbed this microwave..."
Although welding machines have such a high variability in power ratings, the voltage required for most is 20--30 volts...some processes are AC 0r DC, and some machines offer both. The variance however, comes in the amperes that can be delivered....the higher the amps, the thicker capacity of metal that can be joined. Additionally, there are processes that require a power supply capable of providing constant voltage or constant current. There are so many people with the youtube mentality that if it is broadcasted it must be ok to do; dismantling a microwave is not among the things that most you tubers could do safely....as mentioned in the concerns below.
I've got an old microwave ,and would like to strip it down and experiment with the magnetron and the transformer but I'm not an electrician or a electronic engineer .so I would probably end up being killed or blowing the house up so I just enjoy watching professionals do it on TH-cam !
In New Zealand most arc welders come in at about 48volts, just under the 50v max for ELV (extra low voltage) as a safety requirement.
Transformers create a ratio, which will be insufficient until you parallel a phase. Or in layman's terms, use the output of one transformer to feed another transformer (making it primary feeding secondary) it's output will increase voltage allowing weld output.
Why surge protector strips are useless with microwave transformers: FYI: Additional safety information here: Make Lichtenberg wood art safely on the youtube channel of bigclivedotcom. At 2:09 he begins a detailed diagram including how regular power surge suppressors are not able to cut the power on microwave transformer jolts. He talks like an engineer and has very technical explanations as to why he says to never use a microwave transformer. Kids have died using these devices outside their intended use.
WhimZpix nailed it!
I'm a bit late to the punch, but you can wire two car batteries in series. Use that trick on the trails to weld broken axles. Works pretty darn good
thanks for trying something so off beat. and thanks for being honest in showing something that didnt work.
To draw the arc you need around 50V and then enough current available to properly heat the work. Aluminum requires helium as an inert gas envelope to prevent oxidation. (Heliarc)
You have to name this video as making transformer from tearing microwave
Given the amount of people who have watched this, the time duration in which the video has been up, and the amount of people statistically killed by electrocution via microwave oven components (and the entire lack of safety notice in this video) It can be determined this video itself has likely caused between 2 and 12 deaths from people who have watched and attempted something similar.
Aluminum is usually welded in an oxygen free atmosphere as in heli-arc using helium gas. In a tig machine the gas is fed to the arc along with the welding rod. High current is more important than high voltage as the current determines the amount of heat that can be produced at the working area. You don't need to draw four inch sparks, nor should you want to, but you do want to heat the metal you are working on so that it melts together with the rod at the joint. I'm only a very novice welder, please correct any errors.