DIY Projects

Lost Knowledge: Sign painting

Lost Knowledge: Sign painting

The Lost Knowledge column explores the possible technology of the future in the forgotten ideas of the past (and those just slightly off to the side). Every other Wednesday, we look at retro-tech, “lost” technology, and the make-do, improvised “street tech” of village artisans and tradespeople from around the globe. “Lost Knowledge” was also the […]

Pen-shaking centrifuge

Matthias Wandel made this rather tongue-in-cheek invention to help him shake pens. Using my gear template generator program, I was able to establish that a three-tooth lantern against a mating cycloid shaped gear should just barely work smoothly. I wanted a high gear ratio for my pen centrifuge, so this was a good place to […]

How-To: Kids’ dining footrest

How-To: Kids’ dining footrest

Instructables user wramey writes: This cheap and easy addition to our dining room chairs prevents kids legs from dangling uncomfortably. It won’t get all their wiggles out, but it will help them sit more comfortably… and now that our kids can sit more comfortably facing the table, they get less food in their laps and […]