Following the one for 8″ flopies, for 3,5″ (three-and-a-half-inch) floppies too we have made a cleaning mechanism in cooperation with Birdbrain. Compared to previous solutions, it provides capability for cleaning floppy disks from both sides. You can print the mechanism on your own 3D printer.
For any questions regarding printing and the model, please ask in the comment section on Printables.
Download the 3,5″ floppy disk cleaner model 