You are the first and only one here on youtube who had the wherewithal to show how to make one of these for the rest of us who aren't so skilled in electronics.

@ProtoG42

8 жыл бұрын

+David Yisrael I'm very glad you found it helpful. Thanks for watching!

Fan circuit needs some heuristics to stop it from cycling. Can you make a video about that?

Your video is very good! What is the frequency of the sample?

Would you ever care to revisit this project and go through how you design your coils? Do you just aim for a specific inductance or are there other factors you’ve found?

What a nice and informative video Proto! It's detail and quite in depth explanation easily tell us how it works. Also, i have a question about the thermocouple, doesn't the induction coil also induce the thermocouple that you placed between the isolator and graphite crucible inside the coil? If so, are you already calibrate it with some method? Thanks for the video!

If you like my videos, please consider supporting me at Patreon.com/ProtoG42 to help me produce more content. Another great way to support me is buying from my Amazon store here: astore.amazon.com/prg06-20. You can also support me by simply subscribing, liking and commenting on my videos. Thanks for watching!

@jakegingrich7214

8 жыл бұрын

+Proto G can this be done on a much larger scale with a zbs driver that size?

@sweetguy19762

8 жыл бұрын

Will a variac work?

@davidtoft3623

8 жыл бұрын

probably not, Ive heard that it needs an instantaneous voltage supply to get the resonant tank circuit going.

@sweetguy19762

8 жыл бұрын

David Toft O wow dam

@albertampoan930

7 жыл бұрын

Proto G amazįng

Hey cool video. If i hooked up one side of my welding machine to the crucible @ 220volts with 50amps .. same thing, yeah ?

Nice video, thanks for this. Question, could a 48v 10a smps gamble this induction heater? I noticed you were only drawing just over 8 amps at 40v? I'm wanting to use a setup like this for melting silver. Thanks for any insight

Proto G - very much like your own litz wire coil. May I ask how you made the coil? (type litz wire, # of twists, coil size ant turns) I have been binge watching all kind of how-to induction heating KZread videos. but yours are the best! You know how to explain what, how and with what you are doing it. Great job.

good list of parts and components.

At what frequency is being used and what wave form to heat the graphite?

Do you have a video on how you made your coil?

Can you run 2 or more separate induction heaters to increase total power?

Hi. If we build a bigger coil,it will work like the original or it will produse less heat at the metal? Thanks for sharing!

how much did u pay for the power supply which powers up the induction heater? where did you buy it?

Same technique used in the production of aluminium in an induction furnace making aluminium billets from processed ore, they use heaps of power, so I am assuming the parts from an induction cooktop use similar parts?

you want to the site that you compre you like the bobina desmontable?

Would you know if the hand held induction heater that's also 1000w weather or not it can handle to melt metal like this

Hi there, want to know more on the power source, like does it plug into the mains power, I'm in the uk 🇬🇧

The fan keep changing speed must get annoying really quickly. Cool to watch though.

Would a dual or 3 phase induction heater work at higher temperatures or work more efficiently? Having 2-3 coils of tubing instead of one. Is there any advantage?

What is the hottest you temperature meter will read before its tip melts? What is the largest you could make this and the hottest it will get? Could it melt a few pounds of stainless steel?

Advice request: I have two carbon crucibles both are larger than yours. I am primarily interested in small aluminum foundry, and wondering if this ZVS drivers is the best option or even adequate since I will need to create my own coils to fit my crucibles. I think they are 100 and 500cc crucibles. I will measure the dimensions.

Hi. Do you think it can be capable of melting platinum? 1000W heater migth not get the pot to desired temp? Nice setup by the way. Martin

Hey,can i heat some waer with the normal coil?

CAn i power on the ZVS induction heating with load already in it?

Never thought graphite would even be remotely affected by an inductive field, or do you have anything between that is heated and thus heating up the crucible?

Older video I know, still hope you might reply... What Mosfets did you purchase as replacements?

What is the best material to use to build the induction coils? Also what can be use that would be flexible to wrap around stuff to heat stranded wire? Does heavier guage work better?

Hi, I'm having a bit of trouble with this induction heater. I heat a solid iron 31 mm diameter and 35 mm thick. I use 36 Volt of battery. But when it runs about 3 minutes, suddenly the diode (D1) and Mosfet IRFP260N that is on the schematic explodes.. what do you think the cause of the problem is?

from keystone science! you have some great videos

@ProtoG42

7 жыл бұрын

Thanks!

@moustafarefaat6155

6 жыл бұрын

can any 1 tell me the used frequency ??

@moustafarefaat6155

6 жыл бұрын

can any 1 tell me the used frequency ??

@jacobkaltz1958

4 жыл бұрын

Somewhere around 85,000 hertz to 120,000 hertz

What would need to happen to put a PID to this?

hi...what was the time taken to reach red hot condition and what was the diameter of the work piece that has been heated..

Hi, I have put one of these together using a zvs driver from eBay. It has a fan cooling the board and the coil is water cooled. I'm running it of a 48v 25A switching power supply with a similar display for current and voltage. I have heard it is bad to turn the coil on with something inside it (I.e. the crucible) and that you should switch it on and then lower the crucible In. Is this true? I see you just turn it on with the crucible already inside. I plan to melt aluminium and other non ferrous metals using a graphite crucible.

Hi bud. Im looking for a tool that allows me to braze carbide tips into steel shanks and i thought about this. Do you think it will work? I need it to go cherry hot so it melts the silver solder and brazes the carbide tips. Also for tempering punches and such. Do you reckon this setup would work? Should i go with circulating coolant on the induction coil/tube to protect it? Thanks in advance. Fred

just became my hero of the year. I was using a steel bucket with coal in the past :/ Holy crap, this is so clean.

hey proto it's possible if i using 52 v psu ???

Does it matter on the diameter of the copper coil and size of copper?

Love it. Thanks for sharing. Try some borax as flux, or argon shielding to keep the puddle clean.

@Mentorcase

5 жыл бұрын

You can't, as the aluminium melts it leaves behind the aluminum oxide skin which becomes dross.

@woutmoerman711

4 жыл бұрын

Don't use borax as flux for aluminium. It degrades the quality. A KCl NaCl mixture works good as a flux.

How are you modulating your power supply?

What is the size of litz wire used in this video..?

Great work! Brilliant idea with the fiberglass wrap! Approx what temperature/metal would be the workable threshold for this design? Would it work for copper, gold, any alloyed steels? Had you considered using ceramic fiber insulation or aerogel fabric for insulation?

@ProtoG42

8 жыл бұрын

+worldburger Thanks, this crucible actually is insulated with an aerogel blanket. The solder pot on the other hand, used a fiberglass wrap that I embedded aerogel into. I'm not totally sure of the limits, but I've used it up to 900 degrees Celsius.

Can you send a schematic with a BOM (bill of materials). Need to make something modified but will help to start withwhat you have here. Then alter as needed. Thanks

do you need to cool the litz wire ? other than the fan . how many turn the coil what gage ?

In the video it seems the graphit pot is burning. You see little blue flames at the inner side of the pot. But great Idea and it is good working.

hello, i would know why the crucible temperature increase? because the graphite crucible is diamagnetic. And where to put the thermocouple then?

great video bro !

@ProtoG42

7 жыл бұрын

Thanks!

Hey there, i have 3kw of induction heater that i brought from online shopping. The problem is i won't be able to melt even the aluminum. At the beginning of the process the amp rising to maximum but once the material gets heated up the amp down to minimum this cause the temperature stay and won't rise up. Can someone give me any advice how to keep rising the temperature, i used the iron crucible (do you think this is the problem?)

I understand that you like to make your own coils, but in this video, you are only drawing about 7 amps at about 48 volts with the crucible in your home made coil. When I put the crucible into the copper tube coil that came with the heater, the ciruict draws well over 30 amps from my 24 volt supply. Have you tried to heat the crucible in the original copper coil? If so, what voltage/current relationship did you find?

@Speeder84XL

6 жыл бұрын

It depends on the inductance of the coil - the more inductance you have, the more voltage you need for a certain heating power, but less current. The opposit happens if the coil has lower inductance of course. What works best, depends on your circuit design and what transistors you use. I don't know very much about this particular design - but apphearently it works good the way he run it, and lower current is never a problem for the components (unless you compensate lost heating power by increase the voltage soo much that you risk exceeding the transistors and/or capacitors maximum voltage of course)

Hi sir. Can you help us with our thesis? We use a 48v 50A. We use an metal tube as an crucible and only the top part of it is getting hot. May i know how to compute for the number of turn of coil for that ( 48v, 50 A). We use a 3/16 in. Copper coil and the Inside diameter of wound is 3 6/8 in. Thank you

can i use MEAN WELL SE-600-48 AC to DC Power Supply, Single Output, 48V, 12.5 Amp, 600W, 1.5" (How much temperature can be reached)

Can Titanium be heated to beyond the critical point and made malleable

48V 50A is way overpowered and can easily damage the MOSFETs really i don't think so i think load will talk enough amp for good work and he will leave the additional amp i don't know if aim right . please tell am and you have Avery nice video thanks

@user-yb9jn1nm6w

6 жыл бұрын

و الله انت زى الفل و انا مبعرفش انجليزى ياريت بس تقولى لو فرن سعته 50 كيلو الكهربا الى بتوصل للبيوت فى مصر تكفيه و لا الافران د بتشتغل ازاى ؟

Hello colleague you can put the graphite crucible straight on the coil if the person wants it

Can you tell us the cost of electricity?? Nice video!

I have this 1000W Induction Heating device (like you and spiral cooling) I get a lot of heated capacitors-more than 80 degrees. How is it with you? You don't know what it could be. I have a voltage of 40V 15A.

I see that the title picture for this video DOES show the crucible in the original copper tubing coil..It's that setup that I need to know the voltage and current for.

@ProtoG42

7 жыл бұрын

That was just a test with my 48V, 20A power supply. Check here for more info and and links to all the parts I used. www.instructables.com/id/7-Uses-For-an-Induction-Heating-Machine-How-to-Mak/

Anyone knowing how long last these small induction crucibles? They have a way thinner wall than propane crucible. What would be the signs that's time to replace for a new one? Thanks 🙏

Link on crucible is wrong. What is it made out of?

Extremely cool.

i was experimenting with that zvs driver 3-4 years ago i could not melt anything because i was not using custom coil or crucible and also i was powering it with lipo batteries (48v)12vx4 . at some point i used a big iron rod and that destroyed the mosfets.. i have a video of that. anyway, you proved you can melt alluminum but againg a very small piece and cant mold anything.. i looked out to make a 3-4kw zvs but it was too complex too expenssive and parts hard to find, so i stoped having melting metals on my head..

i like ur video. I'm interesting with this heater. I wanna ask a question, if I change the coil with big one (Maybe diameter 6 Inch). can the driver still running? please Reply.. :)

@jacobkaltz1958

4 жыл бұрын

mahmud aulia yes it will just be a slower heat.

Nice! But I think you should have put the coil lower to melt the metal faster with less power consumption (you see it very clearly on the glow that the hottest part is not at the bottom where it should be, but higher up on the sides - as expected, given the coil placement)

@kasparroosalu

Жыл бұрын

EM radiation energy density is highest at the middle part, assuming even coil coverage over the height of the crucible. This comes from the inverse square law for electromagnetic radiation. It's not a problem if the crucible is at least half full (probably isn't a problem at all). Graphite crucible is like a Faraday cage so the metal is heated trough heat conduction. I also suspect that EM energy transfer to crucible is more efficient in this configuration rather than in some way what heats the bottom most. Electromagnetic coupling of something.

@Speeder84XL

Жыл бұрын

​@@kasparroosalu That's true. Also, the bigger the diameter of a round object being heated, compared to the coil diameter, the better the coupling will be for inducing eddy currents (which means less reactive current in the coil = better efficiency and lower coil temperature). I probably didn't taught of that when writing my original post. Because of the shape of the crucible, the diameter is less at the bottom and also as you say, if a part of the coil is empty, that will also make coupling worse. Another problem I see why the bottom is cooler, is where he put the insulation. He has insulation around the crucible, to not overheat the coil - but the insulation will also keep heat in and if there is nothing under the bottom, a lot of heat will radiate away there and cooling the bottom. I also don't think this is really a problem, since aluminium has such a low melting point anyway (but if melting steel for example, it could mean the life time of the crucible would be reduced by a lot, since the middle must be extremely hot, to get it hot enough at the bottom and thus get "eaten away" more quickly by the oxygen in the air than if it is evenly heated). The aluminium it self is probably also such a good conductor of heat that all of it will get about the same temperature, regardless if it's heated evenly or just from the top - so oxidation cause by parts of the metal being hotter than necessary, will not be a problem either.

please give us a complete instruction on making the coil and insulation. also the specs of the power suply.

@ProtoG42

7 жыл бұрын

www.instructables.com/id/7-Uses-For-an-Induction-Heating-Machine-How-to-Mak/

What do you do to decrease the current at higher voltages so you can reach 48v without exceeding 20A in order to get the maximum wattage? Does increasing diameter to distance from crucible help, or increasing windings to reduce voltage induced in the crucible while increasing current capacity, then increase input voltage to bring voltage back up? I would rather input 48V at 10A to get 480W instead of 24V at 20A. If the crucible were considered 1 turn and you currently have a 8 turn coil (ignoring skin effect from frequency) which at 24v draws 20A for 480W, would doubling the windings to 16 allow you to input 48V at 10A and still get 480W? it would be easier on my batteries if I could arrange them to 48V without blowing the mosfets due to excess current! Awesome videos on induction heating, they helped me get motivated to put something together!

@paradiselost9946

Жыл бұрын

you got close-ish. transformer impedance reflections, turns ratio squared. work/crucible is 1 turn. so reflecting back to the primary, the resistance (really, the reactance at that frequency) of the work is multipled by turns squared... if the work/crucible is 1R, into 6 turns, its 36R at the supply. 8 turns, 64R, 16 turns, its... 256R seen by the supply. this being the case, with a 200v supply, 6 turns would deliver approx 7A, 8 turns a bit over 3A, whereas into the 16 turns would give under 1 amp. and in the work you would have 42A, 24A and 16A respectively, and the power dissipated as heat in the resistance, the workpiece, is ~1764W,~576W, and ~200W. obviously you cannot have more power in the work than the supply can actually deliver, but the work isnt 1R, i used that as an example. basically just throw an ammeter on the DC rail and keep DECREASING turns until you get the ideal current draw with work in the coil. its better to use a tapped matching transformer so you can change the number of turns and still have the same reflected impedances for different work. contrary to intuition, you want a step up transformer... it makes sense when you include it in the example i laid out above... due to the nature of the tank circuit used, and that the supply voltage is very low. its kept low as the gain in the tank circuit easily exceeds component ratings! a 24V supply will elevate to over 300vAC, or 150V across each FET. i have run one up to 200V supply using 1200v fets. and im never doing it again. it allows you to run directly off mains, but the sic fets arent cheap, and its really easy to smoke them. if you set it with no work in the coil, the impedance is "infinite", and infinity times any transformer ratio is still infinity! a parallel resonant tank circuit at this point will draw only enough current to overcome its internal losses. it only pulls current as the loss due to the works resistance increases. and it always stays in resonance.

Any idea how off the temperature readings are? Because the probe itself will heat up because of the induction not just the heatig of the crucible.

@ProtoG42

8 жыл бұрын

+Fekete Imre I don't think it's that big of an issue. I have probed after turning the coil off and still had the same readings.

Did you opt to go for an oven due to using DC power? I presume the aluminum would not react to the induction because it isn't moving (if I understand the concept correctly). Have you experimented with AC power, or does your controller not support it (not to mention the power supply)?

@ProtoG42

8 жыл бұрын

+Kennosuke Vernon The DC is converted to high frequency AC and aluminum does react to it, but not as much as graphite does. So in this case, the graphite is just speeding up the process. I suggest you reading the article I wrote on this topic here: www.instructables.com/id/7-Uses-For-an-Induction-Heating-Machine-How-to-Mak/

Can a setup be used to mealt copper, or is the copper not enough magnetic? Anyway great channel, just subscribed!

@TwistedRealityDesigns

Жыл бұрын

Silver is not magnetic either.. the question is whether the crucible will get hot enough to reach a good pouring temperature for the copper. My guess is yould need a bigger power supply

What power supply I can use for this to melt gold I got the coil and everything jus need to find the rite power supply

@gayusschwulius8490

4 жыл бұрын

48V 20A at least. If you can afford it, buy a 50A unit.

I may be wrong on this, but the coil that it CAME WITH was made of hollow pipe and not WIRE for a reason, it is so that you can circulate water through it to cool the coil. Have you tried it this way? water cooling is better than air, won't cool off your crucible, and should make everything super awesome.

@ProtoG42

7 жыл бұрын

You're not wrong, but my coil does not get hot as it is insulated from the crucible. The included coil works but it is not the best coil for every job and requires water cooling if using for extended periods of time. The litz wire used in my coil is used in almost all commercial induction cooktops as it is the most efficient means of transferring power and doesn't require unnecessary water cooling. My coils produce an equivalent temperature rise in the crucible while using less power from the power supply and also making it cool enough on the outside to handle without tongs. The litz wire can be used to make several different attachments for the heater.

@sNEAKYnIGHTmUPPET

7 жыл бұрын

Proto G why are you using a fan then?

@ProtoG42

7 жыл бұрын

The fan is for the capacitors, not the coil. It wasn't pointing at the caps in this video for some reason, but watch part 4 where I boil the water with the pancake coil and you'll see it pointing at the caps.

Hi, Your videos are inspiring. I received my Mean Well SE-1000-48 power supply. As it seems they do not come with power cable/adapter etc. And while watching your video I see that you have toogle switches probably one for the power supply and one for the ZVS driver. As 48V and 20.8A will be passing through the tooggle switches. What kind of Toogle switches did you use? If you could give me some referrence I would really appreciate. Thanks in Advance, Ati

@ProtoG42

8 жыл бұрын

+Atilgan Sesen Any 20A toggle like this amzn.to/1VeXgK7 It's not a big deal to go over 20 amps with the toggle switches seeing that they're rated for 15 amps at 240VAC and 20 amps at 120VAC. That's over 2,000 watts. For direct current, the general formula for joule heating(resistive heating) is P = (Va-Vb)*I so a toggle switch rated for 20amps at 120VAC rms should easily be able to handle over 20 amps at 48VDC.

@AtilganSesen

8 жыл бұрын

+Proto G Thank you very much. I really appreciaate your suggestion. I just ordered those: www.ebay.ca/itm/5-X-Heavy-Duty-20A-125V-SPST-2-Terminal-ON-OFF-Toggle-Switch-Waterproof-Boot-/161865893417?hash=item25aff58629:g:7xoAAOSw9mFWKJiv&vxp=mtr I will give updates and I am looking forward to see new videos ;) Best Regards Ati

could you melt titanium with this if the coils were in a vacuum chamber full of argon gas?

@heberhall6532

6 жыл бұрын

Oz Fresh if you have a vacuum you can't have argon in it...true vacuum = no gases

What is the max temp that you got the Graphite crucible to...using the 1000W ZVS driver?

@ProtoG42

8 жыл бұрын

+Paul Wilkins In this video, the max temperature was about 1526F/830C. If you watch part 5 you will see it get up to 1925F/1051C with using lipo batteries. I do not know what the max temperature this is capable of beyond what I've done.

Did you have to heat treat this crucible at all? any prep work for it before hand? i Just got a graphite crucible and i want to make sure i don't destroy in in my first use (I use a charcoal foundry much like the one Grant Thomson "The Kind Of Random" on KZread made)

@ProtoG42

8 жыл бұрын

+Tommy Cochran Nope, this was just an off the shelf graphite crucible.

i hooked up 2 PC Power Supplies 1 500Watts 12 V power supply

also you want to put a fan on toip of the mosfets to keep them cool.

@ProtoG42

7 жыл бұрын

If your power supply is good enough, the MOSFETs shouldn't get that hot. That's the whole point of a zero voltage switching circuit. The MOSFETs are supposed to switch off with zero voltage across them which drastically reduces switching losses. The capacitors are what really need the fan.

Great video... you should mention for your safety and others, to pre warm the cast iron pot for any residue of moisture... one drop of water would make anything molten explode in your face.... people have gotten eye injuries and face burns last 40 years doing this kind of thing... just a heads up for anyone going to to this experiment....

@oldschool1993

5 жыл бұрын

Old wives tale- you can pour water directly into molten iron or vice versa with no effect other than steam. Only if the steam has no way to escape will you get an explosion.

what is that fan going on and off? Is that the 48v supply's fan? It seems to be behaving strange..

@ITman496

8 жыл бұрын

+Tha14GR I've noticed that the fan seems to go to a constant speed when the voltage is lowered, and starts going erratic at higher voltages. Very strange.. I suspect you are right about it misbehaving.

@DreitTheDarkDragon

8 жыл бұрын

So, zener diode in series with fan? :P No PWM, no problem.

@DreitTheDarkDragon

8 жыл бұрын

In that case I can't wait for next video, fan in this one was really annoying ;)

@ProtoG42

8 жыл бұрын

+ITman496 It's not the supply's fan, it's just some fan I had in my fan drawer.

@ProtoG42

8 жыл бұрын

+ITman496 I fixed it for you for the next video.

Very cool buddy

I want to buy the same , i would like if you could make real time boiling water inside some 1.5 or 2 inches tube to see how fast is to boil water that will help me decide before buy it

So...you place magnetic induction coils in the walls of a cylindrical room. In this room, flooded with sea water, you place a Steel piece, like several plates intersecting at their center for more surface area. The steam produced by the heated metal goes on to produce electricity, quite a lot of it. We can't do this on a large enough scale to produce mass amounts of energy or in a small enough model to power a home?

@Zothaqqua

7 жыл бұрын

Instead of doing that, use the power you'd be putting in to the coil to power the home instead. This isn't an over unity machine.

the small Pan, look like this in PUBG, Nice Melting, but you need to use more larger pot on diametre

Very nice! how do you size the Litz wire thickness for the current? do you just bundle a bunch of wires together?

Hey man maybe you can help me out i have the 1800w version I got off ebay or amazon and I also got a 2400w server power supply that was a bitch to wire just to figure out how to turn it on I got lucky any ways its running on 240 and has a max amps rating of 50A at 48v it also has 12 v anyways it came with a coil and cooling and I run water through it but anyways I tryed to harden a knife I made from 1095 steel and held it in there it getsorange hot in matter of about 15seconds and when it hits that point the amperage draw on my unit starts dropping from initially about 30A to down to i can remember but ma Ymmaybe 6 or 10 A i heard it does this a Curie temp but even put a magnet by the metal it still is attracted to it.. Mind you I'm using a n52 neodynium magnet.. Which I shouldn't cause they die with heat quickly but nevertheless I cant seem to get it to non magnetic because to heat treat harden 1095 it should get a little hotter than non magnetic and the hold there for 20 minutes or so and then a quick quench in canola or park's quech oil. canola should be heated to 130f and so I don't know what to do i thought maybe the fans on my mazilli driver were cooling off my knife but I blocked them off and still no go.. I have seen people with 1000w Induction heaters melt a price of steel but apparently you have to be able to tune the circuit or have it auto tune when the piece reaches Curie temp otherwise the induction heater is not really working.. I also have a graphite crucible much larger r I tried for a hour to melt gold and it got red hot inside but wouldn't really melt maybe barely but not really my coil is quite large and its bare copper and it's out in the open air.. Maybe I need insulation.. I also tried making a much smaller coil from solid copper wire instead of tubing I used 6 gauge and was the size of when you put your middle finger and thumb together and still couldn't get the knife to non magnetic.. I quenched anyways and of course it did not harden.. Please if there is anything you know you can help me with that would be great... I've scoured the internet trying to understand induction heater circuits cause I too was going to make everything my self including the power supply but it was cheap enough.. So maybe you obo w of where I could find a circuit I could hook up to the induction heater to tune the thing to maximize its melting capability or allow it to melt something for God's sake. You can email me if u can at xeller8u@gmail.com that's my main email now.. I would really appreciate someone else's help

Hey Proto, Did you make your own coil for the induction heater minus the pancake ones? I'm trying to get started with this to smelt aluminium and cast small parts in my crucible with insulated ceramic outer shell. For now I bought the 1kg crucible on ebay as there was something up with the size of the object you place inside giving too much current draw and breaking the ZVS driver from ebay like on AvE's video. Would the 2kg crucible work as well? I have a amperage and current meter along with a shunt so I can also measure power usage on the fly to not exeed that 1000~1100watts of draw.. However are you also water cooling your coil and is would I be able to melt at 12+ volts al be it slowly? * I might use an 800~1000watt ATX power supply.. which I can turn up with a potentiometer inside to 15 volts... although with modding 24v is possible

@ProtoG42

8 жыл бұрын

+Masterpj555 Yes, I made my own coil for the crucible with 7 windings of litz wire. I used to litz wires bundled together to improve efficiency a bit and to keep them from overheating. If your coil is drawing too much, just add more windings. You'll need as close to 20 amps as possible to melt aluminum in a reasonable amount of time. You should use a 48 volt power supply for best results with this unit.

@Masterpj555

8 жыл бұрын

+Proto G Wow that was an extremely quick response and I highly apreciate it! I was thinking of using lipos then *although I only have 3 cells here of my DIY quadcopter* along with my lipo charger.. I have multiple battery warning attachments which monitor each cell.. as beefy power supply is also quite costly. I was hoping minus a very slow heatup time it would be able to reach these temperatures. I just cannot reach the 48volts using an atx power supply and putting them in series cannot be done. I wish there was a better place to tap these voltages and currents from with stuff I might already have..

@Masterpj555

8 жыл бұрын

+Proto G in your video only about 390watts is used or so.. or at least at the end when the thing is red hot.. is this higher amperate needed for a 2kg crucible you mean or just in general to reach those temperatures with a decent chunk of aluminum ?

@ProtoG42

8 жыл бұрын

+Masterpj555 Yeah, this was when I was still being careful not to blow anything. If you watch the video where I used the batteries, I got up to 1143 Watts! I can't say for sure but it's worth a shot. Just try experimenting with different coils to meet your needs. Thanks for watching!

Awesome video man. Would an adjustable 48V, 10A power supply work or does it have to be 48V 20A? Also, what's the reason that it draws huge amps at low V (based on some of the comments)? Electronics not my strong suit!

@ProtoG42

7 жыл бұрын

24V/10A would be better than 48V/10A but 48V/20A is better than 24V/10A. The reason it draws large amounts of current at lower voltage has nothing to do with the voltage, but rather the quality of the power supply. If the rise time of the power supply is too slow, it will cause both of the MOSFETs to turn on, which cause a large current to flow but doesn't produce any output on the coil of the heater.

@yingyang2632

7 жыл бұрын

Gotcha. Thanks!

how can i set the heat at 100F without increasing?

@kbdesignz5808

7 жыл бұрын

Gerashi20 with a pid temp controller

How much electricity does this use compared to say ...a stove?

What are your gloves made out of and where did you get them?

@ProtoG42

8 жыл бұрын

+slothsd They have rubber on the palm and a nylon mesh on the back. They're called gorilla grip gloves and you can get them at Home Depot and other hardware stores. I do not recommend using them when a lot of heat resistance is required. My crucible is very insulated so I don't really needs gloves. If I were to spill molten aluminum on them, the plastic would melt to my skin.

I'm a quite analogue type of person so this might be a stupid question. I'm into knife making. Would it be possible to use this setup for heat treating blades?

@lazyh-online4839

8 жыл бұрын

I've used it for that purpose before, its not always as easy to get precise temp control so I just used it for quick forging where I didn't need to get out the propane or waste oil setups to hammer some metal. I have heat treated 1084 with induction heating before. I'd imagine once you work out how much power will heat a given amount of steel to a certain temp you w could use a variable voltage supply to precisely control temperatures with steels that require holding times like O1 tool steel but I found it easier to wait for my heat treat oven to warm up for those steels, whereas the induction heater was good for 1084 where you need to go strait from heat to quench with as little time in between as possible, no need to worry about flinging the oven door around and grabbing the steel just right before it gets too cool for quenching to work.

it would be cool to watch it evolve to a priner from the blue bin

Have you measured the resistance of those gloves with a ohm meter , beware , many gloves like that are actually conductive ...

@ProtoG42

6 жыл бұрын

This is low voltage. The gloves are only mildly protecting my hands from getting burned if they accidentally bump anything.

@moustafarefaat6155

6 жыл бұрын

does this 1000w ZVS melts steel and iron if left for longer time ?

Yeah, cool touch .. behind the black glove.

@ProtoG42

8 жыл бұрын

+YK Chan No. I can grab that crucible insulation with my bare hands.

did you have to make a new coil for graphite crucible to reach high enough temp? running same but cant get past dark red

@ProtoG42

7 жыл бұрын

I made the coil in the video. It is insulated from the crucible with a pad similar to ceramic fiber. Watch my battery powered video. I got the crucible bright red with the stock coil as well but for melting purposed, I would insulate the crucible with something similar to kaowool to prevent the heat from leaking back through to the coil and the PCB. What power supply are you using?

@benedwards6320

7 жыл бұрын

Proto G 48v 10amp

@benedwards6320

7 жыл бұрын

Proto G also used two car batteries but still couldn't reach temp

how to build the coil,could you please share with us the specifications of the coil ?

@yautomationjean

11 ай бұрын

Did you find that video ?

@ahmed.bhewary775

11 ай бұрын

No @@yautomationjean

And at the end of his great performance, she said: "Is that all there is?"

have you tried hacking an induction cooker into an induction heater?

@wayneashby5030

6 жыл бұрын

That's an interesting idea! Amazon has a simple portable one for $45. It may have to be hacked as you suggested because the stock one limits the temperature to less than 500F. Maybe the coil would have to be replaced with a custom built external one. Did you ever try one since your comment was posted? www.amazon.com/Gourmia-Multifunction-Countertop-SmartSense-Temperature/dp/B017HX1BMS/ref=pd_sim_79_4?_encoding=UTF8&pd_rd_i=B017HX1BMS&pd_rd_r=EMWM7Y3K3DXNWA47YJW6&pd_rd_w=N2OuP&pd_rd_wg=kr9B4&psc=1&refRID=EMWM7Y3K3DXNWA47YJW6

@moustafarefaat6155

6 жыл бұрын

can any 1 tell me the used frequency ??

where did you get the litz wire?

@ProtoG42

8 жыл бұрын

+lutfijd I have bought litz wire on eBay as well as several manufacturers in the U.S.

This looks like the ideal way to melt metal. I guess it would be too hard for a home user to scale up to something with 10 times that capacity.

Ah awesome it got notes and hotter