Make a water block out of a heatsink for less than $20!
Computer liquid cooling with Car parts!
Electrolytic Rust Removal aka Magic
A Complete Guide To Airsoft
THE ANNIHALATOR (AKA the world's first fully automatic pen gun)
Solar Power System
Make Your Own Biodiesel Processor
$5 Mini USB Fridge!
How I built an electricity producing wind turbine
Build Your Own PVC Johnboat for minimal cost and time.
How to build a Remote Operating ALL-Terrain Robot for under 300 dollars!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ROV submersible (PVC)
How to construct the perfect cheese cake souffle
Mousebot Revisited
personal powerPlant
Shake it like a Tic-Tac!
R/C Steam Turbine Tank
Build a radio control boat from pieces of a dead RC plane