Science

DIY science is the perfect way to use your creative skills and learn something new. With the right supplies, some determination, and a curious mind, you can create amazing experiments that open up a whole world of possibilities. At home-made laboratories or tech workshops, makers from all backgrounds can explore new ideas by finding ways to study their environment in novel ways – allowing them to make breathtaking discoveries!

The Mechanical Glory of the IBM Selectric Typewriter

A “whiffletree” is a mechanical digital-to-analog converter. Brilliant science-and-technology documentarian Bill Hammack, professor of Chemical and Biochemical Engineering at the University of Illinois, has produced this fascinating video anatomy of IBM’s classic Selectric typewriter, in which a 7-bit whiffletree is employed to convert keypresses (digital) to precisely coordinated tugs (analog) on the control cables that rotate and tilt the type ball. Doubly awesome is the fact that the video features an appendix (yes, a video appendix) which focuses exclusively on the whiffletree itself, closely illustrating its operation with a simple 2-bit case.

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Impressive laser-cut wooden Mars rover model

Impressive laser-cut wooden Mars rover model

Back in April I blogged about the plans and kits for this and other elaborate laser-cut wooden models available from WoodMarvels.com. At the time, I snarked a bit about how all the images on their website are actually CG renderings, implying that, with models that complicated, it’d be nice to have some reassurance that somebody, somewhere, had put together a real physical version in the real physical world before giving up the green. Well, MAKE pal and dynamite CNC contractor Angus Hines sprung for a set of plans, cut the parts on his own equipment, and took these cool photos of the assembled model on red clay to suggest the Martian surface. [Thanks, Angus!]

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Lego interlocking solid puzzles

Lego interlocking solid puzzles

Apart from the fact that the bricks and plates are open at their bottoms, and so the pieces always have one side that can’t be “smooth,” Lego is a pretty handy way to prototype interlocking solid puzzles. Many of these are based on cubic units, and can be built in Lego at a scale of 1 cube = 2 studs x 2 studs x 5 plates.

Eric Harshbarger, whose Lego hijinks we’ve featured a couple times before, has produced some lovely models based on this principle. Shown above are his 6-piece burr, checkered solid pentominoes, Soma cube, and deluxe polycube set. The awesomeness continues at Eric’s site.

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