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Homemade Check Valve (one-way valve)
MOTION SENSOR .... Good to Go,Quick & Easy...
Double Mirror Right Angle Drilling Guide
Shrink Your Raspberry Pi With MicroSD Card Slot
Cheap precision drill stand
The Whirlwind - An iPhone horn speaker and stand that fits in you wallet!
Make a working lock and key
How to X-Ray
Thermoelectric USB charger - off grid electricity.
Five minute solar phone charger
Crystal cMoy Free Form Headphone Amplifier
Edible Chocolate Brain from MRI Scan
Portals: A Networked Mixed-Reality Playground
How to make a Macbook Tablet
How to Make a Spot Welder - for Cheap!!
Portable native MOD player based on Raspberry PI (plays MOD,S3M,IT,XM etc...). Uses BassPlay library.
How to make a magnetic stirrer that doesn't cost like a professional one
Hack a dead HDD and an angle grinder disk into a small tool emery wheel
Magnetic Periodic Table of Herbs and Spices