double thick magnets and keeper bars

[Clint 55]

Maybe you guys can clarify something for me. And know that I only have a rudimentary understanding of magnetics. Since like poles oppose each other, wouldn't stacked magnets try to degauss each other? In other words, is a magnet that's manufactured as a 1/4" thick going to be the same as two 1/8" thick mags clamped together?

Cermag said if you force like poles together, they will partially degaus each other. So no it is not the same. It will work to force 2 together, but it is not ideal. The way I make mine is I epox 2 mags together and then remagnetize them as 1 magnet.

[ArtieToo]

Cool. What do you use to re-magnetize them?

[Clint 55]

A magnetizer I got from mojo. It's a clamp with 2 rare earth mags stuck to it.

[Demanic]

I like the clank. Probably why I like the Alternative 8.

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[Clint 55]

Well there ya go.

[Demanic]

On your left.

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[Clint 55]

Watch out!

[DavidRavenMoon]

Cool, thanks David.
I have a couple of humbuckers that I've considered as candidates for double mags.
How much difference does using a second keeper make - does it change the output significantly? Lower the resonant frequency?
What's the overall effect on tone & response?

The edge of the magnet is the pole. If the magnet is thicker then you want the keeper to be the same thickness. That better conducts the magnetic force into the poles.

The extra steel will increase the inductance a bit.

As far as stacking magnets, that never works well.


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