CAD Studio has organized a designer contest "Hedgehog in the Cage" in cooperation with the CAXMIX magazine and with 3D-tisk.cz. "Hedgehog in the Cage" (in Czech "Ježek v kleci") is the most popular mechanical puzzle in the Czech Republic, featured in adventure stories by J.Foglar. This puzzle has origins in the United States - see Hedgehog in the Cage in Wikipedia. The contest task was to designGo to the original post...