ThinkpadIL wrote on 2023-09-25, 14:45:
I guess it is the right thread to ask this question ...
... so if a floppy is dirty, is there a way to clean it (without destroying it)? Any suggestions?
Depends how dirty it is, with what, and how badly you need to read it. In some cases it might be worthwhile to carefully cut open the envelope, wash the media itself in warm water with some dishwashing liquid, rinse and dry, then repack into another (or also cleaned) enevlope. Less severe cases can be handled throught the head window/cutout. I do not recommend washing the floppies without removing the media first but that too can be done if you have time and some experience with drying it all afterwards. And it will take a long time to dry.
Oily dirt can be removed with IPA (after excess is wiped first) but take care not to rub too hard or you will damage the media. In general you always want to avoid using any force or strong solvents, but sometimes the media state is so bad that some choices have to be made - after all it either cleans up or is unusable anyway.