About this 3D model

This is a keychain made by an impeller and a supporting platform. The rotation of the impeller is smooth and regular indepentently of the accuracy of the printer you are using since the tolerances are choosen to be pretty high. If you are an engineer or an enthusiast about mechanics or fluidodynamics and you like to fidget with stuff this is the keychain for you! Original impeller design: https://www.thingiverse.com/thing:2426666