How to amplify metal

  1. Go to Radio Shack.
    1. Get a "Piezo Buzzer Element." For example: "Miniature Piezo Buzzer Element," 273-064.
    2. Get a female 1/4" jack, which will be suitable for a guitar cord. For example: 274-280.
  2. Go home.
  3. Solder the red and black wires from the buzzer to the 2 terminals of the jack.
  4. Put a little piece of electrical tape on the blue wire so it doesn't get in the way.
  5. Plug a guitar cable into the jack and into a guitar amp.
  6. Turn on the amp.
  7. Place the buzzer on the metal.
  8. Hit the metal.
Total cost: $3.37

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