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I’m learning to use the lathe and mill! I made this machined tube, but I haven’t had a chance to make a whistle of it yet, so it can be a general purpose shiny thing in the meantime.

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An overenthusiastic battery powered cat and a contact microphone.

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A pinwheel, a contact microphone, and a guitar amp.

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A paper cup and a rosined string.

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The traditional way to start an instrument-a-day month: with a whistle.