This is an old revision of the document!
Chinese Forehead made use of assorted low-tech gear for a variety of effects. In addition to the use of a vibrator, a hacked open-reel tape recorder was used to run tape loops.
The device was pulled from some street-side trash one day. You can kinda-sorta see a picture of it in one of the posters for the Nov 15 1979 TR3 gig