S21/S19 Pro Antminer 200mm Air Duct

Free for all. Engineered for performance. Let’s mine silent.

⚠ Experimental Status

Use the gasket (Printed in PLA or PETG) to verify the alignment of the holes.
And let me know if something needs to be changed!

I have used this model: https://grabcad.com/library/bitmain-antminer-s19-pro-1 you can test the position of the screw-holes with the gasket-file and scale the duct-bottom size in your slicer if needed.

The S19K version was co-developed with Patrik Stránský @PatrikStrans_4435102 - for his S19k Pro.
The two parts supply flange & gasket are made by Patrik.

JeffMartinJu confirmed a "Perfect fit" on the Antminer S21!

Print Settings

• Material: PETG or ASA (Recommended for heat resistance)

• Infill: 15% - As you want.

• Design: Two-piece, TOP support-free printing,
  BOTTOM support is necessary - Organic/Tree support recommended.

• Optional Gaskets: TPU (100% infill, 0.6mm / 3 layers thick) for airtight sealing.

Required Hardware

• HG Power HI-200EC 8 Inches / 200 mm Inline Fan

• Main Screws: M4 (Confirm diameter for your specific PSU model).

• Hardware Length: * Case Screws: Must be est. 8mm total depth (Original screws are too long and may damage internal components).

  • Assembly: New screws and nuts required to join the top and bottom sections.

Installation Notes

• Clearance: Be aware that the inner screws are located in a tight-clearance area; a thin-profile driver or ball-end hex key is recommended.

• Sealing: Use the optional TPU gaskets between the duct and the PSU face to maximize static pressure and prevent air bleed.

⚠ Disclaimer

Modifying mining hardware can improve thermals but is done at your own risk. Monitor fan RPM and chip temperatures immediately after installation to verify airflow performance.

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