Month: May 2010

Math Monday: Nailbanger’s Nightmare

Math Monday: Nailbanger’s Nightmare

By George Hart for the Museum of Mathematics In 1995, I designed this hypothetical construction and posted a computer rendering of it online. It is called “Nailbanger’s Nightmare” because I thought it was far more complex than any carpenter would ever want to make. After fifteen years, I was surprised to receive an email from […]

Fabric Scrap iPod Cozy

I love it when I can work with folks, of all ages, who love to sit down and try their hands at something new. The teens involved with the Detroit Public Library’s HYPE (Helping Young People Excel) program are just those types of folks. Handmade Detroit will be teaching some soon-to-be-sewers the tricks of the […]

Deluxe dead-drop spike in solid stainless steel

Deluxe dead-drop spike in solid stainless steel

For those who aren’t up on their tradecraft, a “dead drop” is a place where spies or other clandestine-y folks drop off items for later retrieval by other agents. A “dead drop spike” is a particularly ingenious little container devised for the purpose. Basically, it’s a hollow metal spike, with a threaded watertight closure at the top. You put your top-secret microfilm or whatever inside the spike, take it to your dead drop, and stomp it into the ground with your foot. Then you cover it up with a rock or a piece of trash or whatever. The lid has a pull-loop built into it, so that when your contact comes by later to clear the drop, he or she can grab the spike by the loop and yank it out of the ground again.