Magnet "aging": what the dickens IS it?

[big_teee]

IMO, the A5 humbucker bar Mag is a stable magnet.
I think most of the Through time Demagnetizing comes from other stronger magnet sources.
For example setting your fav. Les Paul on top of an active guitar amp or speaker cab.
Or Throwing a bunch of pickups in close proximity in a showcase.
I stock some humbuckers on consignment at a local vintage guitar shop.
I place and separate all the pickups. Each time I go in the store they are all in a pile.
Some are Ceramic, Some A2s, Some A5s. So you can imagine what the outcome could be.
So far I haven't had to recharge anything.

[jason lollar]

yes I imagine most people degauss from fully charged- I always though Fender coils discharged due to proximity and the movement of the magnetic field from the strings in motion-sometimes just proximity could do it like in a fender and sometimes the proximity and the motion combined. You can degauss alnico by rubbing a piece of steel against it or by proximity to another magnetic field that is in opposition- moving the opposing magnetic field also seems to degauss faster than just pushing magnets together.
I assumed Paf style constructed humbuckers was another case of proximity and string motion.
whatever it is almost invariably alnico magnets in old pickups will get stronger if you recharge it and its not due to its ageing of 2% every hundred years- this is much more dramatic than going from 1,000 gauss to 999 gauss in 50 years

[kleuck]

Jason, are you THE Jason Lollar -please excuse me if i ask silly questions, i'm new here, and french, so i do not always understand well all the replies- ?
If so, you can perhaps say what is for you a "degauss magnet" (how do you make them) as you are making some.I bought you this summer a P90 equipped with these (actually i replaced one with an AlnicoČ one for a more "vintage vibe", and i compared your A5 with the AČ, same kind of "magnetic power" when i tried them with a compass)