Catapult Glider Launcher
Fling your Rocket Glider or other toy aircraft 150 feet into the sky!
Posted by Rick Schertle
Categories: Fun & Games, Home | 2 Comments
Lumber Projects
Gravity Catapult
I have long been enamored of catapults. Invented around 400 B.C., they were used until nearly A.D. 1300. So for 1,700 years, catapults were arguably the largest, most expensive, and...
Posted by William Gurstelle
Categories: Fun & Games | No Comments
The Atlatl
Before the bow and arrow there was the atlatl*, or spear-thrower, an ancient weapon that could throw a spear or dart with enough force to penetrate a mammoth’s hide. It...
Posted by Daryl Hrdlicka
Categories: Woodworking, Fun & Games | 2 Comments
Jam Jar Lanterns
Lighting makes an event, and candles transform the mundane into the extraordinary. These glass jar lanterns are beautiful hanging from a tree, or from chain across a deck. Pick any...
Posted by Brookelynn Morris
Categories: Art & Design, Craft, Home | No Comments
Electromagnetic Aluminum Levitator
About 13 years ago I learned of some military research into a satellite- and missile-defense device that would propel projectiles using Lenz’s law, which governs the direction of electrical current...
Posted by Thomas R Fox
Basic Stilts
By Molly Graber and Chris Merrick Have you ever dreamed of being really tall? Walking on stilts is a fun and adventurous sport. But where are you going to get...
Posted by Molly Graber
Categories: Craft, Electronics, Woodworking | No Comments
5-Minute Foam Factory
What keeps your coffee warm but also rides the cold Pacific surf? What’s in the Rock and Roll Hall of Fame but makes an annoying, squeaky sound? Even though it’s...
Posted by Bob Knetzger
Categories: Tools, Home, Workshop | No Comments
Workhorses
Based on the trestles of a Japanese woodworking bench, these sawhorses are a good beginning joinery project. They’re constructed using the mortise and tenon, the fundamental joint in woodworking. The...
Posted by Len Cullum
Categories: Woodworking, Tools, Workshop | 3 Comments
Stroboscope
Take stunning photographs of objects in motion with the stroboscope.
Posted by Nicole Catrett
Categories: Photography & Video | No Comments
10-Rail Model Rocket Mega-Launcher
Make the cub scout rocket derby a blast.
Posted by Doug Desrochers
Categories: Kids & Family, Fun & Games | No Comments
Secret Chessboard Compartment
Unlock a secret compartment with magnetic chess pieces.
Posted by Andrew Lewis
Categories: Fun & Games | No Comments
Solar Car Subwoofer
Build a simple power system that's attached to the top of a car.
Posted by Henry Herndon
Categories: Energy, Music | No Comments
