Month: January 2012

Electro Wire Stripper

Electro Wire Stripper

As soon as I saw this, I thought, “why didn’t I think of that!?” Thingiverse user Brian Beebe designed an Electro Wire Stripper, a wire stripper that indicates when you’ve cut through the insulation. As soon as each blade comes into contact with the wire, it closes the circuit to turn on the LED, letting […]

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How-To: PC Fan Stir Plate

How-To: PC Fan Stir Plate

Liam made this cool DIY variable speed stir plate for creating yeast starter for his homebrewed beer. To control the speed of the magnetic stirrer, he used an ATmega328 with the Arduino bootloader connected to a PC case fan. Liam even made use of the LEDs that you can sometimes find on fancy fans to […]

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Math Monday: Passing a Cube Through Another Cube

Math Monday: Passing a Cube Through Another Cube

It is an amazing fact that it’s mathematically possible to pass a cube through a hole in another cube of the same size. If you stand a cube up on a corner (with a diagonal vertical) and shine a light down on it, its shadow is a regular hexagon. If you calculate carefully, you’ll find that a square face of the cube can fit inside this hexagon with a bit of room to spare on all sides.

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