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How-To: Knee Sock Tights

It seems like kids tights are are always in need of replacement. Between runs, holes, and stains, they tend to make it through about one wear—two if you’re lucky—and then they’re so unsightly that they’re relegated to the bottom of the drawer. It seems like the knees, heals, and toes are always the first to […]

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Robotic Fish Uses only One Servo

Robotic Fish Uses only One Servo

At the Center for Biorobotics in Estonia, Eszter Ozsvald built a mechanical fish named A.riel that can model the movements of actual fish surprisingly well, and using only one servo inside a carefully made silicon-based mold. It took many iterations before the final product, but found that in the end she could develop the same vortex patterns as actual fish. Her site has extensive documentation on the build process and is definitely worth a look for the mold-making processes alone.

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