the modern form
the collected works of doug griffith
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plus quite a few more that are either not yet released to the public, never will be, or are just a little too boring.
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REVOLUTIONARY PLANT MOVER:

This is a circulating hydroponic system that rotates plants a full revolution every 10 hours. It is based on a planetary gear system.

I raised my hand to this challenge when the inventor brought his concept to a company I design for. It took over a year to complete.
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website by me