Simple Christmas Pyramid

cults3d

Another Christmas/Winter Design Modeled in Fusion360, Inspired by Traditional German Christmas Pyramids The design is a simple, minimalistic approach to a festive holiday decoration. It's powered by rising/moving air from a heater/radiator/etc., and does not use open flames! The rotational bearing consists of a small magnet and some steel balls. There are model versions for 13mm steel balls and 1/2" steel balls ("inch"). The arc base structure consists of three parts glued together. There are model versions for D10xH3mm and for D8xH3mm cylindrical magnets. You need to print "base" three times and one "bladering". Model units are [mm]. Check out the video here: https://youtu.be/Eks_HvOsT2U Edit 20171203 After a few weeks, steel balls creating rotational joints seem to have flat spots, increasing friction and stopping rotation of the bladewheel. A small steel ball (one from a 608 skate bearing) was added between them to decrease magnetic forces and minimize contact area. It works better than before, spinning smoothly and continuously. It might not work for everyone, depending on how strong their magnets are.