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Diving Depth Gauge
Make a simple depth gauge for freediving out of a syringe. This is also an experiment with Boyle's law which states that the product of the pressure and the volume of an ideal gas is constant.By:...
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Automatic bicycle pump
Fill your bicycle wheels with conveniently available pressurized air stored in automobiles.By: AleksiContinue Reading »
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Welding plastic bags
Plastic bags can be welded together with a soldering iron. The resulting seam is strong and water resistant. This is a very useful technique for making kites.By: AleksiContinue Reading »
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Lanyard repurposed
At almost any comercially sponsored event you'll be handed these lanyards (with ugly sponsor messages on them so you don't really want to wear them). You might like to collect this junk anyway, knowing...
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