40mm to 35mm Fan Duct - Biqu H2 Fan Upgrade!

Printing Printer Parts!

This is an adapter duct to mount a 40mm fan in place of a 35mm fan. It was specifically designed to work with the Biqu H2 Direct Drive Extruder but will work in other places (only uses 2 of the 35mm mounting holes though). Features internal fins to direct airflow and straighten the flow of air as well as a smooth duct interior for best flow.

I used this on my Ender 5 Plus with the Biqu (BigTreeTech) H2 extruder and a Noctua 40mm fan for a quieter fan operation.

• Necessary Parts (Affiliate Links):
  • Biqu H2 Extruder: https://amzn.to/3t19dNE
  • 40mm Noctua Fan: https://amzn.to/32GgDvb
  • M3 Screws: https://amzn.to/3yXDjBY

• INCLUDED FILES:
  • CAD STEP File to learn how I designed these.
  • 40 to 35mm Fan Duct

• PRINT PARAMETERS:
  • No Supports Required
  • 3 Perimeters Recommended (Thread holes)
  • 25%+ Infill (I used Rectilinear)

Mine were printed in GreenGate3D "BubbleGum Pink"

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All of my Designs are covered by a Creative Commons Non-Commercial License. Sale of prints using my designs are the sole right of myself, the designer, and those I license to do so. Please understand every design is hours of work and multiple prototype prints to ensure quality. Unauthorized sales will result in new designs not being made public.

PLEASE Credit any and all Remixes of my designs: MandicReally