8 inch floppies, decaying

Christian Corti cc at informatik.uni-stuttgart.de
Thu Jul 12 03:06:13 CDT 2018

On Wed, 11 Jul 2018, Al Kossow wrote:
> On 7/11/18 2:21 AM, Christian Corti via cctalk wrote:
>> I use Screen 99 for cleaning floppies
> https://store.comet.bg/download-file.php?id=16956
> first ingredient listed; isopropyl alcohol

Of course, somehow you need some "magic" in the stuff ;-)
But as you might have seen, the weight in weight is 10% maximum. And when 
sprayed on the surface (only a small spot) it generates a nice solid foam. 
It hasn't dissolved the binder/oxide for now, not even on Wabash floppies 
(that in my experience aren't too horrible, some noname stuff is much 
If I'm afraid that it might dissolve the media I can always test it 
first on the inner side next to the hub hole. And I don't rub the 
media with high pressure, only gently. It is important to extract the 
floppy from its sleeve for cleaning, though.


More information about the cctech mailing list