Todays notebook sketch is some ideas for building a tape “transport” – the mechanical bits that move the tape around in the right way and at the right tension.
I have a weird fascination with magnetic storage media and tape in particular. It was a key technology in computing for decades and it has more or less completely disappeared.
All that time in home, commercial, and industrial use has left lots of bits and bobs to experiment with, although it is very very quickly disappearing.
Other than the playback and record heads and the media itself, the devices can be recreated from scratch. (And let me get back to you on making heads and media…)