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Make a carbon arc torch for your 220 volt stick welder
How to make a racing lawn mower (Updated!)
Start a fire with air
Free Air Conditioning
HHO car adaptation
120,000 Volt Van De Graaff Generator
Van de Graaff Generator made from junk
500,000 volt Van de Graaff Generator Using Cheap Parts
Low Cost Jacob's Ladder Made From A Salvaged Oil Transformer
Pop-pop or put-put steamboat made easy for children
Be an Aeronautical Scientist: Make your Own Jet Engine for a few Pennies.
Air powered bicycle.
Yet another lockpick instructable
Create a hardware store jet engine!
The accidental pocket jet engine parts
The accidental pocket jet engine...
Penny and Nickel Battery
shutdown mod (good for pranks)
Durable Wallet made from old floppy disk cables.
Wallet made from a computer keyboard
Mad Scientists Light
R/C Steam Turbine Tank
Build a 15,000 rpm Tesla Turbine using hard drive platters
Tesla turbine from old hard drives and minimal tools
SinkScience with the Tesla CD Turbine
Build an Amazing Tesla CD Turbine