Fetch-O-Matic: Automatic Ball Launcher

Several years ago I watched a viral YouTube video that starred Jerry the Dachshund, whose engineer owner had built him his very own automated ball launcher. I had two dogs at the time, and was also unemployed with some time on my hands, so I decided to try my hand... Read more »

CEB Shaker Assembly

Sketchup Model Additional Materials Required: Shaker Mount Shaker Motor Shaker Hammer and coupler 1″ Pillow Block Bearings(2) 1/4″x2″ Bolt (1) 3/8″x2″ Bolts (4) 1/2″x2″ Bolts (2) 3/8″ Lock Nuts (4) 1/2″ Lock Nuts (2) 3/8″ Washers (8) 3/8″ Lock Washers (4) 1/2″ Washers (4) 1/2″ Lock Washers (4) Read more »

Two-Can Stirling Engine

The Stirling engine has long captivated inventors and dreamers. Here are complete plans for building and operating a two-cylinder model that runs on almost any high-temperature heat source. Stirling engines are external combustion engines, which means no combustion takes place inside the engine and there‚Äôs no need for intake or... Read more »

The Luna Mod Looper

The Luna Mod is an easy and fun instrument that will have you making great-sounding loops in no time. Rather than sampling input like a traditional loop station, the Luna Mod synthesizes its own sounds, and you play it using two knobs and one button. Read more »