Fan Showdown A12x25 Windtunnel

thingiverse

This is my submission for MajorHardware's Fan Showdown on YouTube. I wanted to design a model that separates the fan blades from the body in an effort to reduce noise and go for more of a "wind tunnel" approach. I named it "checkmate" because the central shaft looks like a chess queen when it's printed. This does require a cheap 608zz bearing at the top to stabilize the frame, as a super tall fan design like this would most likely wobble all over the place. I also thought that anchoring the shaft at both ends would allow me to bring the fan blades closer to the walls. The frame is designed to use 4x M3 threaded inserts in the Lower part and 4x M3x25 screws to bolt the two parts together. Update: I've split the shaft and the frame into two parts each to make it easier to print with less supports.I've also tried to hollow it out to make it as light as possible. The printing setting are very important, so see below. I have not printed this yet, so I cannot verify the tolerances, specifically the tolerances of the fan blades against the wall and the housing for the 608zz bearing, but they should be fine. I hope to do so soon.