Nắp che quạt hút gió cho Core One L (Vent Flaps)

Core One L Exhaust Vent Flaps (Gravity-Closing)

This is a remix of my Core One exhaust vent flap design, updated specifically for the Prusa Core One L.

While the Core One and Core One L share similar exhaust hardware, the Core One L exhaust bolt pattern is offset relative to the fan outlets, which required a revised frame geometry. This version is designed to correctly align with the Core One L exhaust outlets and mount without modification.

The design uses a dryer-style gravity flap mechanism to help retain chamber heat when the exhaust fans are off.

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How It Works

• The flaps pivot open automatically when exhaust airflow is present.

• When the fans stop, the flaps close under gravity.

• Closed flaps reduce passive heat loss.

• Open flaps allow exhaust airflow with minimal restriction.

This helps maintain higher chamber temperatures for ABS, ASA, and PC, while preserving normal exhaust behavior for PLA and other low-temperature filaments.

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Printing & Installation:

1. Print the frame and 4x flaps.

2. Tilt the frame back so the flap slots face upward.

3. Drop the flaps into the frame. (They should sit loosely and swivel freely.)

4. Rotate the frame to confirm each flap moves freely under gravity. (Light sanding or lubrication may be needed depending on filament.)

5. Mount the frame over the rear exhaust outlets using M3x8 screws.

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Hardware Required:

• 4× M3×8 screws (longer screws also work): https://amzn.to/4sEeI1g

• PETG / ABS / ASA filament recommended: https://mrly.link/prusament

• Prusa Core One L: https://mrly.link/coreonel

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Files Included:

• Vent Flap Frame CAD (Fusion - F3D)

• Vent Flap Frame CAD (STEP)

• Exhaust Vent Frame STL

• Exhaust Vent Flap STL

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Recommended Print Settings:

• 0.2 mm layer height

• 3 perimeters

• 20%+ infill

• No supports required

• PETG or higher-temperature materials recommended
  (Slick filaments tend to pivot more smoothly)

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Notes:

This mod is fully passive and does not alter firmware or fan control. It simply reduces heat loss when the exhaust fans are inactive.

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Support My Work:

If you find this useful, please consider supporting my work: http://www.MandicReally.com/links