Building a gauss rifle
In MAKE 01 we showed you how to make a “gauss rifle” – A linear accelerator for studying high-energy physics costs around $5 billion. But you can make one for about 30 bucks with four strong magnets, a wooden ruler, some plastic tape, and nine steel balls. Here is Daniel’s photo set on Flickr of the one he’s making… Link.
Winners of the Olympus BioScape contest are in, first place – rat eyes “If the key to the inner self is visible by looking deeply into someone’s eyes, rats must be among nature’s most glorious creatures – for a stunning, brilliantly hued and richly patterned photograph showing the inside of an aging rat’s eye has been chosen as the first prize winner in the 2005 Olympus BioScapes International Digital Imaging Competition.” See the entire gallery here…
Andreas writes “I don’t know how, but late at night I got the idea that I wanted to covert my new 3D cell Mag-Lite to a handy photo-lamp. Next morning I dug out some 250 GSM paper and some adhesive foil I’ve been saving for a worthy project and whipped up a quick ghetto-lamp…It’s not all that powerful, but it’s great for macro shots and softening hard shadows, and it’s very portable. Think of this as a beta version, I’ll likely improve the design a bit once christmas is over. The basic concept is sound, I think there’s potential for more if I sort out a proper parabolic reflector for it.” Thanks
Jonathan designed a great printed circuit board router, he writes – “Printed circuit boards are usually manufactured by chemical etching (with iron (III) chloride or ammonium persulfate, for example). This is not very practical if only a few boards are necessary, because these etchants are messy and somewhat dangerous. PCBs can also be manufactured by “mechanical etching,” in which a trace is “etched” by milling away the copper along its perimeter. This requires software to generate a toolpath from the layout and a small CNC mill or router. Lots of companies make routers for PCB fabrication, but they are unjustifiably expensive so I decided to build one.”
Here’s a detailed log of how to build a utility trailer. Includes a free AutoCAD drawing, materials list, parts list, as well as lots of pictures. Glen writes “I needed a trailer to haul around a snowmobile so I decided that I might get better use out of a general utility trailer instead of a snowmobile trailer. I checked the local trailer retailers and found that the going rate for a 5′ x 10′ utility trailer was around $1,300 Cdn. The trailers weren’t very strong and were made mostly from light angle iron. Always looking for a good project, I decided to build one instead.”
Pat writes in with these week’s video from the Manufacturer’s blog! “…here is this week’s video of fiberglass insulation being made. The opening screen says, “Sand to Glass to Fiber Glass.” You’ll see here the process from sand to glass, and recycled glass, through 2500-degree ovens and eventually into fiberglass insulation. This is a substance that will be keeping us warner this winter, thought you might want to see how it’s made. The plant you see here makes enough insulation each day to insulate 250 homes.”
From the folks who brought us the