I have told this before on AK, but is still good for laughs.
I saw a DIY bulk erasure in an Electronics, or stereo mag back in the day.
The idea was to take (their recommended) transformer apart, put it back together with all the U shaped plates oriented in the same direction. Tape it all back up....and VOILA...a bulk erasure on the cheap.
I did not have the tranny they recommended..but I had a BIGGER one. Bigger the better, right?
Out in my detached garage, one hot summer day, on my workbench...followed the directions, got all done, took another sip of beer, and plugged that puppy in. Most of the tools nearby on my workbench slammed into the thing...all the lights dimmed way down, and there was a loud, low frequency hum coming from the electrical system. Power cord was melting when I finally got ahold of it, and pulled it out of the recepticle.
Went in, bandaged my hand, got another beer, and sat on my front porch contemplating life while a power truck drove around the neighborhood looking for 'a reported problem'. Asked me if I knew anything about it, and I told him...Nope...been sitting here on my porch all afternoon. :yes: