h a l f b a k e r y
The leaning tower of Piezo
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cars that become sand in the stupidly impractical timer
To build the Car-glass timer, you need
lots of cars. These become the particles
sand in your appropriately gigantic timer.
Instead of slipping through the gap
between the top and bottom container,
where they might jam up, there is a
double action rotating gate mechanism
one car at a time. Once
bottom gate opens, a single car drops
down the hundreds of feet into the lower
chamber, where it smashes against the
bottom of the toughened glass. Cars
which don't totally make it through the
two gates are simply severed into
segments by the guillotine action of the
That's all there is to it, apart from
equipping it with an engine powerful
enough to crank the mechanism and
invert it, once all the cars have dropped
through the gated orifice separating the
top from the bottom holding vessels.
In time all of the cars will be reduced to
smaller and smaller particles, eventually
becoming no bigger than the grains of
sand they initially represent.
each grain is a car [xenzag, May 30 2008]
||Make it airtight, fill with oxygen, a bit of water vapor and set in the sun. Over time, the metal oxidizes and the plastic degrades and falls to the bottom. Slower, but more fun IMHO.