DIY Projects
Hans Schepker’s mathematically correct glass and sculpture site is an excellent read – “All my stained glass work is based on geometry. Yes, it is math I am talking about! The following lines are a short explanation of the shapes I work with and a bit of theory around them.” Thanks 
Sound card based signal generators on Linux
Matthew writes “Previously, E-DSP visited the possibility of using your sound card as a signal/function generator. I was curious about the results, but did not have a Windows machine close by to test it. After some searching, I found a Linux alternative and was able to test the limitations of my Sound Blaster Live!” Link.
Food Hackers Make High-Tech Geek Cuisine
Audio from the food hacking event we posted about earlier! “Would you trust a computer hacker to cook your dinner? What if the menu included dishes baked with lasers or served up in laboratory test tubes? A high-tech brand of haute cuisine called “molecular gastronomy” is gaining more than a few fans from the pocket-protector set, who have taken to experimenting at home in their kitchens and coming up with some extraordinary recipes and unexpected flavor combinations.” Link.
Steam powered toys…
Crabfu’s awesome steam powered creations – “These steam machines are real miniature live steam engines. Principles are simple, heat + water = steam, steam pushes pistons and provides power in a circular motion…. how you harness that work is up to you :) I use mainly stationary or marine engines to start. They use alcohol, gas, or solid fuel tablets for heat, and requires oiling on each run. Distilled water is recommended, and steam pressure can build up around .8 – 1.5 bars, or around 10-20 psi…. NOT a lot of pressure. They have safety valves which releases the steam at a certain pressure, as not to “blow up”, and typical running time is about 10 minutes.” Link.
PictureCloud easy 360 degree photos…
Paul writes “An engineering student at Mizzou has developed a system that allows users to create a 360 degree image in real time using only a standard digital camera. Users upload several images taken around an object, adjust playback options, and can download or save their picture cloud for free. The entire process takes place in the web browser, and can be accomplished in about 2 minutes.” Handy for selling stuff on eBay or documenting projects… Link.
Cat observation platform…
Clever cat hack from Charles Platt who is sitting in for Kevin Kelly on the Cool Tools mailing list – “…Feline Automotive Observation Platform. My cat, Eddie, used to complain constantly during car rides, but his limited vocabulary made it difficult to deduce the precise nature of his problem. When I constructed a simple detachable plywood panel faced with a thin doormat for enhanced claw traction, his complaints ceased immediately. Now he sits happily with his nose pressed to the windshield, enjoying the scenery when I got for a drive. The two supporting struts hook onto the sun-visor mounts, and can be attached or removed in ten seconds.” Link. & main site.
HOW TO – Make a Tilt-Shift PC Lens
Dave writes – “When viewing this site it got me curious about tilt-shift lenses. Could be a nifty hack and save $1000 – “Here is another fairly easy hack that if you like it, and use it, can save you goo-gobs of money. Build your own tilt-shift lens. I know there are people out there who would love to experiment with a PC Shift lens, but the cost of purchasing one is generally prohibitive unless you plan to shoot professionally with the lens. (A nikon shift lens with tilt functions cost over $1000, BTW: The Nikon guys once took a look over this and said, “why would you do that to such a nice camera? We sell that lens you know.” I know. That’s the point).” Link.