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Plant Light Stand

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If you aren’t fortunate enough to have a heated greenhouse but still want to start your own plants from seed in the winter, this inexpensive plant light stand will get your plants growing — even in a dark, dungeon-like basement. It’s made primarily from common 2×4 boards, 3/8″ plywood, and... Read more »

Electromagnetic Aluminum Levitator

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About 13 years ago I learned of some military research into a satellite- and missile-defense device that would propel projectiles using Lenz’s law, which governs the direction of electrical current induced by a changing magnetic field. I decided to make a little gadget based on the same principle for my... Read more »