Prusa Dual Extruder, Dual Front-Mount Fan X-Carriage v2
thingiverse
Revised printable version features improved fan mounts, eliminating tiny parts issues. Cleaned-up design allows for increased build area. Placing fans on the front instead of side enhances space utilization, especially with 30mm deep fans. Four bearing setup works well; metal and printed bearings are equally effective. Print duct, two fan mounts, optional cover for single fan use, and modify or print X-carriage to accommodate fan mounts/duct. Secure fan mounts in duct, glue if needed, and fasten with nuts and screws from X-carriage. Attach fans, cover (if necessary), and test setup; Bowden adapter for dual extruders can be used as well (http://www.thingiverse.com/thing:27704).
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