In 1807, Humphry Davy invented an arc light so bright, it was dangerous to look at for more than a split second. Making your own isn't too much trouble.
The concept of a handheld CNC machine may seem backwards. CNCs are big hunks of metal with spinning blades. Why would I ever put one of these into my hands?
Ever wondered what info is stored on the magnetic-striped cards in your wallet? This project shows you how to make a magstripe reader for less than $40.
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