Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: rbowman Newsgroups: comp.os.linux.misc Subject: Re: Floppies - Actual Question Date: 25 Sep 2025 05:27:26 GMT Lines: 24 Message-ID: References: <10b0i4g$3j4qf$10@dont-email.me> <10b1krp$3tbca$4@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net 3CtB0k03293tv1tPdY7iYg8++ddpguxyBaBr4jBXgqEIIQMoCr Cancel-Lock: sha1:hKhp3O7k26YCl2aPcUYf4qY6mP0= sha256:9i6Nzwq6pUa8UrdKjgWQLvLkBOBztHEuf8UQrCNHEuY= User-Agent: Pan/0.162 (Pokrosvk) Xref: csiph.com comp.os.linux.misc:75162 On Wed, 24 Sep 2025 20:45:17 -0400, c186282 wrote: > On 9/24/25 20:04, rbowman wrote: >> On Wed, 24 Sep 2025 20:38:17 -0000 (UTC), Lawrence D’Oliveiro wrote: >> >>> An oscillating magnetic field, on the other hand, like you got with >>> CRT monitors, also speakers ... >> >> I was wondering what a degaussing coil would do. > > Might work, but there were smaller devices sold which made a stronger > field. Used to have a Radio Shack model. Neo magnets rubbed over the > disk WILL erase/unstructure them - but we're talking a higher field > yet. > > The RS unit was 60hz ... though I think a somewhat higher frequency > would work better, maybe 400hz. https://www.magnetsource.com/products/07524 I see several variations on this theme but I've never used one. I've used coils at 60 Hz to demagnetize but not this scheme. In a pinch one of the old soldering guns will work. I recently finished a project that had a lot of small screws down to 1.5 mm and magnetic screwdrivers were very handy.