Noctua Style 140mm Desk Fan

Use a standard 140mm PC fan to assemble a tilt adjustable desk fan. Inspired by the NV-FS1 from Noctua. Please check out their products and files available here on Printables! We had some 140mm fans lying around so we wanted to make a larger version. 

Features

• 140mm airflow amplifier. Based on Noctua's 120mm version. 

  • Helix energy recovery, better captures the rotational airflow.

  • Progressive flow acceleration, focuses and increases air speed.

  • Venturi-effect volume enhancement, draws in surrounding air.

• High efficiency fan grill to improve performance and acoustics. Based on Noctua's 120mm version. 

  • Fan bracket also acts as a spacer to improve performance and acoustics. As found in Noctua's Inlet Spacer. 

• Thumb screw tightening for easy tilt adjustment. 

• Flexible mounting options in the base. 

  • 1/4"-20 nut pockets for tripod mounting. 

  • Array of holes for other bolts or cable ties. 

Printing Tips

• No supports needed. 

• Gyroid infill for best strength and print quality. 

• Tightening Knob

  • 0.20 mm layer height for the nut pocket bridging to work as intended. 

• Base and Base Bracket

  • Use denser infill to increase stability. 

• Grill

  • Solid infill. 

Assembly

Tilt adjust base is assembled with:

• 6x M4 x 15mm (or longer) hex head machine screws. McMaster: 91280A136.

• 6x M4 hex nuts. McMaster: 90591A255.

Fan stack is assembled with:

• 4x M4 x 40mm (or longer) hex head machine screws. McMaster: 91280A152.

• 4x M4 hex nuts.

or

• 8x M5 self tapping screws. 

Steps

1. Insert 4x M4 hex nuts into the Base. Push with a small slotted screwdriver until fully seated. 

2. Attach a Base Bracket to each side of the Base with 4x M4 x 15mm hex head screws. 

3. Attach the Fan Bracket to the Base Brackets with 2x M4 x 15mm hex head screws, inserted from the inside. Threads should point to the outside. 

4. Insert a M4 hex nut into each Tightening Knob and thread onto the ends of the screws from the previous step. 

5. Arrange the fan stack: Airflow Amplifier, 140mm fan, Fan Bracket, and Grill. Ensure the Grill radial curvature opposes the fan blade curvature. 

6. Fasten with 4x M4 x 40mm hex head screws passing through all four parts. Thread on M4 hex nuts. Alternatively, use 4x M5 self tapping screws to attach the Airflow Amplifier to the front of the fan, and 4x M5 self tapping screws to attach the Fan Bracket and Grill to the back of the fan. 

Disclaimer

• We are not affiliated with Noctua in any way. We just think their products are really cool. 

• Airflow performance claims are based on Noctua's official parts and NF-A12x25 fans. Your mileage may vary depending on fan choice and print quality.