Gammitin (Ben) 💾Jul 3
Let's make a new 3.5" Floppy Drive cleaning Disk (Mk II), a thread 🧵:
Show threadGammitin (Ben) 💾Jul 3
So, the last few cleaning disks I've made, were based on Laboratory Filters, they're hard wearing but probably slightly too abrasive.
I found this link to an early 1980's cleaning disk patent:
https://patents.google.com/patent/US4377831
US4377831A - Non-abrasive magnetic head cleaning system - Google Patents

Disclosed is a cleaning system for flexible disk equipment or the like. The system includes a cleaning disk made of an absorbent and porous fibrous material which has an area substantially saturated with a liquid cleaning solution. The cleaning disk is rotatably supported within a flat jacket. The jacket includes opposed openings on either side so as to expose a portion of the cleaning disk to enable the disk to come into contact with a magnetic head or heads and its associated pressure pad if one is used. At least one of the openings is enlarged to expose a relatively large portion of the surface of the cleaning disk, so as to facilitate complete saturation of an area of the cleaning disk with a liquid cleaning solution while leaving a portion of the cleaning disk dry. The jacket containing the disk is placed within a flexible disk system which rotates the saturated disk, thus causing the magnetic head(s) and the pressure pad to be cleaned in a non-abrasive fashion with a wet, dry, wet action.

Show threadGammitin (Ben) 💾Jul 3
Here we go, the recommended material to use is:
Tyvek
Show threadGammitin (Ben) 💾Jul 3
Tyvek is a brand of synthetic flashspun high-density polyethylene fibers and the ideal candidate for floppy drive head cleaning.
Show threadJennyFluff 
@Gammitin does that stuff come in different thicknesses?
Jul 3 at 5:07pmWeb
Show threadGammitin (Ben) 💾Jul 3
@JennyFluff (approx):
Tyvek 1025D 140 microns
Tyvek 1056D 160 microns
Tyvek 1073D 180 microns
Show threadJennyFluff Jul 3
@Gammitin which one did you use and does it work nicely for you?
Show threadJennyFluff Jul 3
@Gammitin like, so my worry is that if I use too thin of material, it would just behave like the liners in the floppy disks and be too wobbly as it needs to have enough support on its own to not destroy itself when driven by the hub. Also.: I want to make 5 1/4 inch ones. My 3.5 inch drives I use for archiving are highly serviceable (easy access for lens cleaning stick with IPA), my better 1.2Mb drive is not however.