Bambu Lab Eddy Sensor for H2S (FAC185)

Bambu Lab Eddy Sensor for H2S (FAC185)

Original Bambu Lab Eddy Sensor for H2S (FAC185) is a key part of the extrusion system of the Bambu Lab H2S / H2S Laser printer. It is a highly sensitive eddy current sensor located between the extruder and the hotend, which monitors the nozzle status and the pressure of the molten material in real time.

Thanks to this sensor, the printer can perform active filament flow calibration, automatically detect problems with a clogged or dirty nozzle, and maintain consistent surface quality and sharp edges of prints.

Main advantages and use

• Nozzle filament coverage detection The sensor recognizes whether the nozzle is covered with molten filament and allows the printer to react to this situation (e.g., stop or adjust the process), reducing the risk of ruined prints.
• Precise extrusion pressure measurement Measures changes around the nozzle related to the pressure of the molten plastic. This allows the printer to calibrate Pressure Advance (PA) parameters for each filament and maintain a uniform flow.
• Consistent print quality In conjunction with the extruder servo motor and Bambu Lab firmware, the sensor helps achieve smooth surfaces, sharp details, and minimize artifacts caused by flow fluctuations.
• Original Bambu Lab spare part Fully compatible and tested for Bambu Lab H2S and H2S Laser. Ideal solution for error messages related to the eddy sensor or in case of a proven failure of the original sensor.
• Easy replacement The sensor is supplied with mounting accessories. Replacement is carried out according to the official Bambu Lab manual and is manageable in home conditions by a user with basic technical skills.

Suitable situations for sensor replacement

Recommended replacement with Eddy Sensor for H2S in these cases:

• the printer repeatedly reports errors related to the eddy current / extrusion force sensor
• calibration fails to complete (e.g., flow calibration, nozzle calibration)
• sudden extrusion failures or unusual behavior occur when starting a print
• Bambu Lab support diagnosed a faulty Eddy Sensor and recommended its replacement

Technical parameters

Note: Always perform installation and calibration procedures according to the official Bambu Lab documentation and instructions for the H2S / H2S Laser model.

Package contents

• 1× Bambu Lab Eddy Sensor for H2S (FAC185)
• 2× screw BT2‑6.5 for sensor mounting

Why choose an original Bambu Lab part

Using original Bambu Lab spare parts guarantees:

• full compatibility with firmware and H2S automatic calibrations
• reliability and measurement accuracy for which the extrusion control logic is designed
• minimal risk of incompatibilities or error messages caused by non-original hardware

If you want to keep your Bambu Lab H2S in perfect condition and benefit from its advanced automatic flow calibration features, the Eddy Sensor FAC185 is an essential and highly important component.

Key features:

• Original Bambu Lab Eddy Sensor for H2S / H2S Laser printer
• Highly sensitive eddy current sensor for monitoring nozzle status and molten filament pressure
• Enables active flow calibration and Pressure Advance parameters for different filament types
• Helps achieve smooth surfaces and sharp details without under- and over-extrusion
• Necessary part for correct function of smart calibrations and extrusion diagnostics on H2S
• Complete package including BT2‑6.5 mounting screws
• Designed and tested by the manufacturer for maximum compatibility and reliability