Picture of Permanent Magnets
I've covered how to make a temporary magnet, but what if you want a magnet that won't lose its properties. After I found that article on what my temporary magnetization technique was called (stroking), I was interested in trying to make the permanent magnet ( http://en.wikipedia.org/wiki/Magnets - Under: Magnetization of materials).

So I tried it using the napalm as my fuel source ( http://www.instructables.com/id/EL4U3X42BHERIE32Y7/ ) and it actually worked. Unfortunately it really was quite weak, so I tried to increase the magnetic field and it worked much better.

I'll show how how to do it both ways.

Materials needed:
1. Fuel (I used Napalm of course)
2. Two metal electrical boxes (Don't ask me what each one is called, just look at the pictures)
3. Hammer
4. Can to keep the fuel in (I used a tealight candle)
5. Lighter
6. Compass (My knife had this built into the handle, make one yourself if you don't have one: http://www.instructables.com/id/EKL14VGJOSEP287U3F/ )
7. Strong, flat rock (or an anvil if you got one)
8. Large Magnet (This is needed for the stronger magnet, I used my 6x8 speaker magnet)
9. Pliers or tongs

Look at my paint drawing to get a general idea of the setup needed. Isn't it cute?

Warning: Boxes and steel will get hot. Use care when playing with fire.

Step 1: Setup the furnace and let it cook

Picture of Setup the furnace and let it cook
To get the best results, first stroke the steel along a magnet before heating.

1. Place the fuel source in the center of the larger metal box and light it. Let this burn for about 30 seconds and then quickly put the top of the furnace on top of it.

2. Postion the steel across the top of your mini furnace and let it heat for a while. (Video below)

Qcks5 years ago
Actually... this isn't a bad instructable.

If you want to make a stronger permanent magnet you should induce an electrical field around the fork while it cools.

Part of what causes a magnet is the electron vectors in the iron atoms. The more vectors that are aligned in the solid metal structure, the stronger the magnet will be.

Heating the fork allows the iron atoms to come into alignment. if you 'stroke' it while it cools, more electron vectors will be aligned correctly. This works especially well if you have some way of rapidly cooling the fork.
spmckibbon Qcks10 months ago

From what I understand from blacksmiths, the iron becomes magnetic by heating it to looses the atoms while the entire thing is under a magnetic field, then after the atoms are sufficiently lined up, and you are satisfied with it's strength, you quench it, thus freezing the metal in this lined up state. I imagine a wide coil of copper wire and a lawn mower battery could be set up, the fork heated, and with tongs, slipped into the coil and thus the magnetic field for a moment, quench, repeat.

Wisaam2 years ago
Is it important to hammer it while it cools down, what if I don't? Will it still become a permanent magnet?
its amazing ill try this @home i think its gona really strengthen my magnet
kokonos6 years ago
could you use a electromagnet?
ampeyro6 years ago
i use another way to do it, involves microwaves and hdds, i wi post an instructable about it in sumer
power8 years ago
Nice.I tried using loads of super strong rare earth magnets to charge up my scissors and now it is a strong rare household magnet.
Loveofchaos8 years ago
by saying that you are using napalm i assume that you are using the styrofoam/gasoline mixture? if not, please tell me what it is and how to make it
FrenchCrawler (author)  Loveofchaos8 years ago
"So I tried it using the napalm as my fuel source ( http://www.instructables.com/id/EL4U3X42BHERIE32Y7/ )"

- Click on the link...

gyromild8 years ago
Great one..

could make a magnet just by using the earth's magnetic field
i bet lots of people never knew that (myself included)

from the wiki article, thinking of attaching a neodymium to a motor, and let it stroke a ferrous metal overnight..wonders if will it work..

FrenchCrawler (author)  gyromild8 years ago
Try it and let us know :)
Neodudeman8 years ago
Wow. That's interesting.
FrenchCrawler (author)  Neodudeman8 years ago
I know. Not the most amazing thing though :( But I never knew that you could make a magnet just by using the earth's magnetic field, as weak as it turned out. So I tried it and it worked. My stronger permanent magnet (I turned my weak one into the strong one) is still able to pick up the nail.