Silent 40mm Velocity Stack (Jet fan cover)

thingiverse

I wasn't super crazy about any of the fan covers I could find, especially considering my fans have a 21mm center section, so I designed this one with silence in mind. I designed this myself from scratch, but it obviously resembles almost every other jet style fan cover out there. Simple to print and SILENT. This is version 6, previous versions all increased fan noise, this one does not. Base is exactly 40x40, so it fits literally any 40mm fan out there. Outer "ring" is roughly 56.5mm in diameter, which tapers down nicely to 38mm for the fan inlet. The screw holes are only 1mm above the bottom of the print. Total height of the cover is 12mm; center cone is the full height, whereas the actual duct is only 10mm in height. The screw holes may be a bit tight, but that's only because I wanted there to be 1 solid perimeter around it, otherwise there would be holes in the print. No longer a WIP.