While it is a great video, it doesn't seem like he actually made a viable floppy disk in the end. Even if he didn't though, it would have been great to say what was actually achieved in the end: what write density was achieved? Could we write and recover even 1KiB of data?

This fascinating engineer [1] has actually achieved making tapes and floppies from scratch [2].

[1] https://www.ninakalinina.com/

[1] https://www.ninakalinina.com/links.htm / "DIY tapes and floppies"