into a dangerous little device. 800 amps of

electrical current is about to be really bad news for

anything made of metal.

Today I'm in the mood to melt some metal. This

Microwave Oven Transformer used to be a dangerously

high-voltage device, but I modified it so the

voltage is extremely low, and it's the amps now

that are insanely high. High enough that when the

electrodes touch this screw, it melts into a little

ball of steel. This time I've hooked it up to a

machine screw for melting, and when it heats up it

changes color and the outer layer bursts into

flames. If I hold the electrodes in constant

contact, you can see molten metal flowing down the

screw, and within seconds it's completely gone. I

just love the way these light up and flash,

throwing off sparks as they melt. This bolt is

longer so it's taking more time to melt. You can

see an array of color changes as the metal heats up

to the point where it begins to glow a burning

bright orange. Back on my workbench, you can see

the input voltage to the primary coil is about 120

volts AC, which is typical mains power in my area.

And with this modified secondary, you can see I've

stepped the potential down to only 3 volts. The

voltage is so low that I can actually touch the

live wires with bare hands, and not feel anything.

Even though the power being generated is enough to

completely incinerate this wood screw on contact.

This much power has the potential to kill you, so

don't ever try this yourself. Now here's a 5/16"

bolt I'm trying to melt, and it's building up so

much heat that my 4 gauge electrode wires are

smoking. As it's cooling, I'll try a little

amateur blacksmithing while I have the chance,

because this got so hot, I just melted my melter.

4 gauge wires just aren't enough to handle the

extreme current pumping through these wires.

That's ok though because the primary coil is still

good, so I'll just rip off the secondary so I can

use the rest of this in another project, like

making a makeshift stick welder. Look for that in

a future video. In the meantime, I still have this

other MOT that was salvaged from a microwave in a

previous project, and after making the proper

modifications, I've got a new metal melter sporting

this thicker 2 gauge wire. To fire it up, I'll

attach input wires to the primary coil, plug those

into a power bar, and flip on the switch. You can

see the low voltage sparks off the terminals, and

I'm measuring their potential at just over 2 volts.

Once again, for your entertainment, I'm holding the

leads bare handed, and you can clearly see there's

power to the system because of the electrical

arcing. There's also a visible amount of current

pumping through this screw. The thicker wire

should be able to handle higher temperatures than

the first, so I'm going to experiment on various

items around the house, like this iron nail. And a

drywall screw. How about some lead solder. Or a

zinc washer. And various other objects made of

metal. One friend suggested I try melting a

padlock and that seemed like a fun idea. It's at

full power and the steel retaining clip is getting

extremely hot, but the metal isn't melting.

Something inside the casing just caught fire

though, and although the retaining clip isn't

melting, the lock is so hot that the clip just fell

open. Along with the rest of it. I'll try a

couple of amateur spot welds on some stainless

steel, and i'm impressed at how much effort it

takes to get them to break. When experimenting

with an aluminum can, the electrodes cut through

the metal like butter, but this thicker aluminum

disc won't glow at all. I'm not sure how hot it is

but when I drip water on it, the water is instantly

boiled and vaporized. I did get this steel coin

pretty hot, and if it'll do that, i'm wondering

what it will do to steel wool. Amazingly, nothing

happens unless the electrodes are so close they're

almost touching. Aluminum foil isn't very exciting

either, but I've managed to reduce this sheet down

to a little blob of metal. I've got some Neodymium

magnets ready, but the voltage is too low to get

through all eight. However, if tap onto two, it

seems to be working really well. They're getting

so hot they've gone totally incandescent, and

apparently have just been liquified. These are

among the worlds strongest magnets, but after

exposure to temperatures over 300ºC, they lose most

of their magnetic properties. Here's a large steel

nut that's harder to heat, but in the end it glows

very nicely as well. This one's just got so hot

that it's exploding liquid metal. As expected, I

got no visible reactions from a 250 volt lightbulb,

or this audio transformer. But I did have a lot of

fun melting down the tines on this fork. This

brings back memories of curling plastic forks over

the fire as a kid. It's not very useful anymore,

but it looks pretty neat. I'm applying a current

to the underside of this knife and can visibly see

the point of contact. The whole blade is glowing

and this is looking really cool. At this point,

the blade is really easy to bend. For my last

trick, I got a circuit board with some high

temperature solder that my desoldering iron

wouldn't melt. But hooking a couple of nails to

the electrodes gives me the ability to instantly

liquify the solder on these contact points. Well

we cheated death again and destroyed a lot of metal

doing it. If you like these videos, you can

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with your friends. I appreciate your support.

Thanks for watching.