Crime-Detection tests for the home chemist
DIY CSI – Link.
Retro
Three wheel skates
This look like a lot of fun and could be a good (re)make – Link.
The Amateur Electrician: Build a telephone
The Amateur Electrician: Build a telephone using a “Ford Spark coil” Modern Mechanix 1930 – Link.
Carl & Jerry: Their Complete Adventures, Volume 4 by John T. Frye
Jeff writes in with a new Carl & Jerry! – After a lot of delays this summer, I finally got the fourth (of five) volumes of Carl & Jerry stories up on Lulu and ready to sell…I also pinched off the first free story from Volume 4: The story presents a fascinating concept: An “infrasonic” […]
Toy Oscilloscope
Rob writes in – Sometimes the best way to take a step forward is to take a step back in time. So Andrew Smith designed a fully-functional toy oscilloscope, made out of parts he found in his junk box, such as the EF91, EF80 and EF184 valves. Using a DC-DC converter to power the old […]
HOW TO – Build your own Sputnik
BBC is interested in finding and filming people who create their own version of Sputnik using the conveniences of modern day technology. They will even research how to get it put into orbit, thanks Adam! – Link.
Raise your own silk
It’s never too late — “Here’s an easy, profitable, spare time job for several million Americans that can make the U. S. world’s largest silk producer.” – Link.
