On 5/6/2024 2:28 PM, Wayne S via cctalk wrote:
You do need a very strong magnet. I’ve put 3.5
floppies on top of
a mag tape demagnitizer ( not technically called that, but you know
what i mean) and it had no effect at all. I could still read them fine
in my pc. I surmised that the magnetic field generated was not strong
enough to get through the plastic disk shield. Gave up after that.
And yet, I have a cheap Radio Shack tape degauzer and it erases
3.5" disks just fine. I do it all the time whenever I have
one that refuses to reformat. Quick pass over the degauzer
and they usually work fine. If not, time to toss them.
As for 720K disks I bought a box of new ones (12 boxes actually)
several years ago on eBay and expect they will out last me.
Especially now that I am moving everything to Goteks.
bill