I was surprised to read that the magnets weaken over time. I honestly thought permanent where really permanent, but according to a google search:
> Neodymium magnets are the strongest and most permanent magnets known to man. If they are not overheated or physically damaged, neodymium magnets will lose less than 1% of their strength over 10 years - not enough for you to notice unless you have very sensitive measuring equipment.[1]
So while they apparently do degrade, it still makes me wonder what these people are doing to markedly reduce the power of their magnets considerably over just a few year.
> Neodymium magnets are the strongest and most permanent magnets known to man. If they are not overheated or physically damaged, neodymium magnets will lose less than 1% of their strength over 10 years - not enough for you to notice unless you have very sensitive measuring equipment.[1]
So while they apparently do degrade, it still makes me wonder what these people are doing to markedly reduce the power of their magnets considerably over just a few year.
[1] K&J Magnetics - FAQ https://www.kjmagnetics.com/faq.asp