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Motion Activated Gun Turret
How to make a pair of bellows
Easy Pvc Cross Bow
Sharpening a Saw
Programmable Temperature Controller + Hot Plate
Fire Power: Electricity from heat
How to "make" plastic
Bio fuel briquettes, compress paper pulp and sawdust into fuel bricks.
Double Cross Weave Parachute (550) chord
DIY Crucible with a Car Fire Extinguisher
Geared Rope Making Machine
Homemade Electric Kiln
Efficient production of Iron(II) Oxide (Fe2O3)
Make a better penetrating oil
How to Make Nitrocellulose
Make your own Magnetic Stirrer 2S
Set Up Your Home Chemistry Lab
make a solar cell easily
Sprout Seeds Overnight...with Scarification!
Make Living Copies of Your Favorite Plants... Automagicallly