Improved Craftbot+/Craftbot2 Object Fan Duct

thingiverse

Designed from scratch in FreeCAD, this stock hotend duct is a reimagined take on the Craftbot+ Fan Duct by sepp974. Key improvements include a better fit to fan angles, enhanced airflow through ducts, and a more centralized design around the hotend. The addition of a viewport provides an unobstructed view of the nozzle for cleaning purposes. Moreover, this duct prints with ease, requiring minimal supports – only those necessary under the center ring. Mounting is straightforward using four M3x10mm screws. An update was made on 12/10 to optimize performance: The bottom aperture was opened by 1mm and the skirt raised by 1mm to reduce fan backpressure. A side port was also enlarged by 4mm, allowing for improved access and better air escape.