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Cook (rocket) Stove
Great repurposing of a throw away item. I have used them to Jack up a corner of a porch to fix it, dozen other ways. I still use one on a simple Apple and grape press to make fruit wines. Good idea you had to make it a down press so you can use it as a board vise.
Save yourself a lot of money and safety problems by searching "solar generator" on Google to see how thousands of others built one.
Off Grid Power Supply
Very impressive from design to building. Neat, intelligent thought went into this. Perfect size, and using dual Petlers is effectively efficiency over store built.
I'm 70 years old, paper clips were probably around 50 years or more before me, amazing that today's youth thinks that this simplistic item is a new invention and needs an instruction video on how to use them. The dumbing down of Americas is alive and well.
Linkit One Energy Harvesting
How to Build the Star Fire
I was gold mining in the 50's with carbide lamps. Unscrew the lid and spit in it, even has a striker on the reflecter. Still got 6 of them left. Get carbide at welding supply. Use it in horticulture too.
Light Electric Vehicle: One-Passenger @ 15mph, 210# Curb Weight