Rostock Max v2 Layer Fan Shroud 30mm

thingiverse

I required my layer fans to operate again after numerous adjustments to my hotend mount. I discovered that I possessed three 30mm box fans lying idle, but all the shroud designs I encountered were either for 30mm squirrel-cage fans or 40mm box fans. Thus, I created this design. One beneficial outcome: I had been experimenting with other ducts that caused minor interference with the axles on the effector plate. In fact, there is hardly any room at the corners. The original shroud design I borrowed/adapted was narrower, though, and even with my modifications, it does not conflict with the arms or axles anywhere during movement. Print Settings Printer Brand: SeeMeCNC Printer: Rostock MAX Rafts: No Supports: No Resolution: .3mm Infill: 15% Notes: The end of this will be close to your hotend, and the mounting screw holes endure considerable strain, so ABS is preferred. PLA will also work, it will simply be more prone to breakage/melting, thus you might have to replace it sooner. How I Designed This I started with the layer fan shroud mentioned in the assembly guide: http://repables.com/r/212 Then I loaded that model up in OpenSCAD. I eliminated the side tabs (unsure why they're there), added a block with fan passthrough and mounting holes, then added the ducting to convert between (difference of polyhedron()s, if you're at all curious). I also added a thin bar along the bottom to force air closer to the hotend before it escapes, and added two blocks to tighten up the effector-plate mounting and hold the duct as high as possible.