> On Jan 9, 2023, at 2:48 AM, Chuck Guzis via cctalk <cctalk@classiccmp.org>
> wrote:
>
> On 1/8/23 22:28, Chris via cctalk wrote:
>> If alcohol isn't a good idea, white vinegar or dilute ammonia could also
>> work. Ammonia is the world's best peneyrant as far as I'm concerned. But to
>> get into deep crevaces and crannies it needs time. Sometimes 24 - 48 hours.
>> It will remove somenpaint lickity split.
> The traditional stuff pre-Montreal Accords was usually Freon TF or
> similar chloroflourocarbon with perhaps some isopropanol mixed in. At
> least that's what my big bottle of Xerox floppy cleaning liquid claims.
> I suspect that some type of ether may also be suitable. I've largely
> taken to cleaning tape heads with heptane--doesn't seem to bother
> plastics any.
Yes, I had a can of that Freon cleaner, and it works great on tape heads -- so
presumably floppy heads too since they have the same requirements.
Back in college I once helped clean 1311 disk drive heads, after a hydraulic
system leak. That was done with isopropyl alcohol. High purity in that
particular case since it was available at the chemistry department store room,
but I would expect ordinary store bought 90%+ would work fine. You'll want to
use some sort of lint free applicators.
paul
