Bulk tape eraser
Degaussing or eraseing tapes with supermagnets
bulk tape eraser ($5), threechordss
Best Way to Erase Used Cassette Tapes?
Quick way to erase safely cassettes
Bulk eraser mistake?
How to Degauss and how to DC erase tapes. Reel to Reel.
How to erase completely any audio/video/data tape
Playing with the big electromagnet / butchered Weircliffe bulk tape eraser