On Thu, Mar 9, 2023 at 7:57 PM Fred Cisin via cctalk <cctalk@classiccmp.org>
wrote:

> On Thu, 9 Mar 2023, Sellam Abraham via cctalk wrote:
> > Jeri Ellsworth made integrated circuits in her garage.
> > I wonder how much challenge would be involved in making artisan batches
> of
> > 5.25" or 8" floppy disks using cobbled-together or homemade equipment?
>
> Is there ANYTHING besides floppy disks that uses large areas/sheets of
> magnetic material?
>
> Is there ANYTHING besides floppy disks that uses a liquid magnetic media
> that could be used for the coating, and might even be available, or would
> that also need to be bespoke manufactured?
>
> How precisely does the coating need to be put down?
>
> It certainly doesn't seem like a reasonable, PRACTICAL project.  But we
> tend not to BE reasonable and practical.
>
--
> Grumpy Ol' Fred                 ci...@xenosoft.com


Reasonable?  Are you serious?  We run decades, even half century old
computing machines in our garages for fun.

I would've suggested the manufacturers of debit/credit cards as a source
for the magnetic material but that seems to be giving way to the chips.
But I'll be willing to bet a supplier could be found on Ali Baba for some
sort of magnetic thin film material.  It would be cheating, but floppy
disks won't be re-invented in a day.

Ultimately, it would be fun to actually mix up the magnetic paste and apply
it to a flexible mylar disc with a centrifuge.  It would definitely be an
adventure.  And a very unreasonable one at that.

Sellam

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