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Teacup Stirling Engine

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There’s energy all around us, just waiting to be tapped. Whether it’s a hot cup of coffee on a cold day, light from the sun, scented candles, or waste heat wafting from electronics, it’s all potential power waiting to be harnessed! This is the world of the Stirling engine. Have... Read more »

Animal Detector

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My 4-year-old son comes up with some funny ideas. A few months ago, he asked for a piece of cheese to leave outside for animals. We gave him a slice of cheddar. The next morning he jumped out of bed and hurried to the window. The cheese was gone, but... Read more »

Bike Repair Stand

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I looked around town for a bicycle repair stand, and the cheapest one was $150. Yikes! Rather than resign myself to flipping the bike upside down on its seat and handlebars, straining my back, and always having to work upside down, I made my own repair stand out of galvanized... Read more »

Hydraulic Espresso Tamper

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Godshot. That’s the elusive goal of espresso fanatics everywhere. Thick with micro-bubble crema and a velvety mouth-feel, and packing explosive flavor, the godshot is pulled too infrequently for my liking. A perfect shot of espresso is the product of many variables, so anything I can do to lock in one... Read more »