Egg Heads Puzzle

As a retirement present for Joe Malkevitch, a geometer friend who likes puzzles, I designed and built this 1′-diameter Egg Heads puzzle from ¼” walnut. Many of my sculpture and puzzle designs require laser-cutting or other computer-guided fabrication technology to accurately produce intricate parts. But this design is simple enough... Read more »

Rocket-Launched Camcorder

Hack a $30, single-use camcorder to make it reusable, then launch it up in a model rocket and capture thrilling astronaut’s-view footage of high-speed neighborhood escape and re-entry. Read more »

Toy Car Launcher

This project was inspired by my son’s love of Hot Wheels cars and making them go fast, as well as my husband’s love of making cool toys for him and wanting any excuse to play with power tools. This car launcher shoots out Hot Wheels-type cars using rubber band power,... Read more »

Felted iPod Cozy

As a weaver and knitter, I love felting. Turning wool into felt is an exciting process in which the airy light fleece radically transforms into a dense material. Also, felting provides near-instant gratification compared to the pace of other fiber arts. This project will teach you the ancient art of... Read more »

Lensless Microscope

Inside your webcam is an imager chip with thousands of sensors, each much smaller than a hair. Replace the lens with an LED, place a sample directly on the the chip, and you have a lensless microscope capable of streaming live video of plankton or other microorganisms to any display. Read more »