You may or may not be interested in scratching, but you have to love the ingenuity of Jeremy Bell. In the video below you’ll see how he built a really unique tape-based scratching machine he calls the ScrubBoard pretty much from (excuse the unintended pun) scratch.
The ScrubBoard is comprised of a fully functioning home-made tape transport that’s operated by a foot pedal so that it can go either forward or backward. The tape loop is then played by a tape head “scrubber.”
This is different over traditional record scratching in that there’s actually two motion paths – the tape and the scrubber, so you can get all sorts of effects that a turntablist can’t get. Plus, there are also 2 stereo tracks on the tape, so with a rocker switch you can go back and forth between the two.