Retro

Hydrogen steam rocket

Hydrogen steam rocket

Steampunk maker Professor Fzz rebuilt a hydrogen/oxygen rocket kit into a thing of Victorian era beauty. He used a 12V 3.3Ah lead-acid battery to generate the hydrogen, and built a control system to monitor battery charge and fire the rocket. He also built his own spark igniter from a voltage generator, and constructed a lovely […]

Plan for your root cellar

Photo from Green Home Building During the winter iciness, lots of people warm up by reading seed catalogs and planning their gardens. If you are among those sitting by the woodstove contemplating books full of DNA, you might want to think of where you will store all your grown goodies. In a recent post about […]

The making of a triode

One of our most viewed and discussed postings of ’08 was Claude Paillard’s stunning triode video where he makes a vacuum tube triode from scratch. While poking around the Web, looking for other videos he might have done, I bumped into this documentary about the 2006 European Triode Festival in the Netherlands, celebrating the 100th […]