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| I attached a model airplane engine to a skateboard and zoomed around.
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| I made a couple of air cannons out of steel pipe. Managed to shoot a potato over 250MPH and over 600 feet!
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| We built 30 foot tall trebuchet like device for people. It was counterbalanced with over 1000 pounds of concrete and had over 180 degrees of rotation.
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| We made a boat in three nights to see the 4th of July fireworks in Boston from the Charles River.
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| We built two 6' tall quarterpipes with vertical walls with the intention of making a halfpipe for skateboarding. Unfortunately, we were unsuccessful in joining the two and instead just used them as standalone quaterpipes.
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| We built a 15 foot tall (30 foot extended) trebuchet and fired water balloons and other similar projectiles.
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| I built a 6 foot tall stand-up personal hot tub for my dorm room.
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| Convert the 1.5 Liter 7-11 Extreme Gulp into a 3 liter refill machine - simply dremel out the insulation.
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| We made these potato cannons early last year with the goal of being more compact than any of our previous models. They worked great for firing water balloons.
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| A fluorescent light starter in series with an incandescent light bulb makes a cool flickering light effect - useful for making a cheap strobe, Halloween haunted house effect, or simulate flakey wiring.
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| This was my first freestanding potato cannon made in '03. Features an automatic pressure regulator and sharpened barrel for easy potato loading.
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| A few pvc pipe fittings and an air compressor that fires 2 liter bottles sky high.
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| For the 4th of July I created this raft to watch the fireworks from out of inflateable kiddie pools.
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| My homemade version of a "stomp pad" automatic mat switch made with foil, cardboard, and lots of duct-tape.
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| A scooter that is propelled by jumping up and down.
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| Danny Shen and I made this luge to roll down parking garages and basement corridors.
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| We built a giant 5 story swing that spans the paralles of our dorm. You get drawn up to the bottom of the 4th story then pull a pin to release yourself and swing.
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