Nema 17 Motor Fan Shroud for Greg's Hinged Accessible Extruder (MakerFarm Prusa i3 i3v) by clough42

Last crawled date: 2 years, 12 months ago

This fan shroud allows you to mount a 40mm fan to cool your NEMA 17 extruder motor without blowing air on the bed or printed parts. It's specifically designed to fit on the MakerFarm Prusa i3 and i3v, but it should fit any printer that uses Greg's Hinged Accessible Extruder.
It will print unsupported on most printers with the fan attachment plate face-down down on the bed.
The shroud has eight internal channels that pull air in through the ports on the bottom, smoothly across two sides of the motor and exhaust it out the top, away from the bed.
It mounts to the motor with a single zip tie, passing through the air channels and the provided hole in the center divider.
Some fans create tubulence and a loud whine as the leading edges of the blades pass across the edges of the partitions in the shroud. If yours does this, a spacer plate is also provided to mount between the fan and the shroud.
See the instructions for details.