Magnitizing magnets??

[firewire]

What would you all think this would do for Magnetizing humbucker magnets?

fisherSci.com - *High-Strength Magnetizer

Description says "magnetize cobalt alloy and other similar" I would think that would work for alnicos but maybe not ceramic?

Thanks!!

[big_teee]

What would you all think this would do for Magnetizing humbucker magnets?

fisherSci.com - *High-Strength Magnetizer

Description says "magnetize cobalt alloy and other similar" I would think that would work for alnicos but maybe not ceramic?

Thanks!!

That should work.
For the cost, Unless you are in big Bizz, I would use some good size NEOs.
Terry

[David King]

As Terry says, this is an over-priced toy that is designed to remagnetize cheap school horseshoe magnets.

From Arnold Magnetics Alnico magnetisation page:

MAGNETIZATION

Alnico MagnetThe most efficient use of Alnico requires that it be magnetized after the magnet has been assembled with its pole pieces in the final magnetic circuit. Shipping the product non-magnetized also eliminates the need for special packaging, and prevents contamination by stray iron-chips, etc. Magnetic saturation at the end-use location requires the application of a magnetizing force 4 to 5 times greater than the coercive force of the material. For Alnico 5, a magnetizing force of 3000 oersteds (240 KA/m) is recommended. For Alnico 8, the magnetizing force should be at least 7000 oersteds (560 KA/m). The magnetizing force need be applied only momentarily. Thus, impulse magnetizers employing a capacitor discharge are commonly used. Direct current magnetizers are also effective.

If you don't want to use cheap neodymium magnets to magnetize you should consider a small bench top magnetizer which runs about $650.

[copperheadroads]

I don't know what the problem is with using a couple of cheap neo magnets ,They work great
I use 2 disc shape 1/2" by 1/2" & 1 swipe & a bar magnet is fully charged
Maybe its because there CHEAP

[big_teee]

I don't know what the problem is with using a couple of cheap neo magnets ,They work great
I use 2 disc shape 1/2" by 1/2" & 1 swipe & a bar magnet is fully charged
Maybe its because there CHEAP

+1 Here.
It's way to easy and to cheap!
I even stacked the neos and made radical changes up and down to ceramics.
Terry

[SonnyW]

OK I have both the $650 Magnetool magnetizer and one made from a couple of big neos mounted in a drill press vise. The commercial one is nice and quick, easy to use but doesn't do any better of a job than the drill press vise version. My neo version has a pair of 1/2" x 1" x 4" N48 neos clamped into a vise from home depot. It was a bear to put together but once done it works fine. The only issue was getting the humbucker bars to magnetize evenly along their length. The strength (gauss) comes out similar with either one. To me, it just comes down to a matter of convenience. Since I have the electric one I use it more, but the end results are very similar.

I have a photo of the drill press vise version here..
http://music-electronics-forum.com/u...bums6-9737.jpg

[firewire]

Thanks!!!
Wonder why soo much $$ for a toy!!
Im going the neo way!!!

Thanks again!!!!

[SonnyW]

Thanks!!!
Wonder why soo much $$ for a toy!!
Im going the neo way!!!

Thanks again!!!!

Don't forget the big neos can be dangerous. This has been discussed a lot here, you might want to do a search on neo magnetizing to see some of the threads. If you let them bang together you can get pinched, and if they hit hard enough they can shatter with shrapnel or even explode.

[David Schwab]

Don't forget the big neos can be dangerous. This has been discussed a lot here, you might want to do a search on neo magnetizing to see some of the threads. If you let them bang together you can get pinched, and if they hit hard enough they can shatter with shrapnel or even explode.

Even small neos can pinch really bad!

If I were working with unmagnetized alnico I think Id use the electric magnetizer. Neos work fine however. I'm not sure if they get the alnicos fully charged though.

[David King]

David,

I used to think the same thing but I'm now convinced, thanks to the Elepro Gauss meter that they are doing the job. I still like the idea of an electric magnetizer too and would like to build one when I get a chance using Electricdavyboy's example from a few year back.

[copperheadroads]

Same here ,I use Elepro Gauss meter ,If you use Stew mac sized magnets it takes me 2 to 3 swipes to fully charge Alnico thats why i use larger magnets now

[firewire]

Yea I played around with them and you are right even the small ones will hurt!!!
Why don't we get a kit/group buy for a nice electric type Magnetizer??? That might be cool!!!!

[David Schwab]

David,

I used to think the same thing but I'm now convinced, thanks to the Elepro Gauss meter that they are doing the job. I still like the idea of an electric magnetizer too and would like to build one when I get a chance using Electricdavyboy's example from a few year back.

I don't use much alnico, so I have to take everyone's word for it. I did use neos to reverse the polarity on a Jazz bass pickup, and they didn't come up to the same strength as they were, but it was pretty close. I have use them on unmagnetized magnets, and I guess they came up to full charge, but I had nothing to compare them to.

So it's good to know it works.

[David King]

Yea I played around with them and you are right even the small ones will hurt!!!
Why don't we get a kit/group buy for a nice electric type Magnetizer??? That might be cool!!!!

firewire,
I like group buys but in this case the expensive parts mostly have to be made. The cost is in the 10Lb of 8AWG copper for the windings and the magnetic iron bars for the cores. It's stuff you can pick up on ebay as surplus, the only electronic components are giant diodes to rectify AC and maybe some gigantic caps. (I'm not sure how the darned things work actually)

[firewire]

Yea ive seen the big coils and caps. Thought maybe some who get something smaller put together like the magnetizer in my first post.