A1

The A1 is an FDM 3D printer from Bambu Lab with a 256 x 256 x 256 mm build volume.

Specifications

Hotend: The A1 features an all-metal hotend capable of reaching a maximum temperature of 300 °C .

Bed: It includes a Bambu Textured PEI Plate and supports a maximum build plate temperature of 100 °C .

Chamber: The printer has an open-frame design with a low chamber temperature [4, 5].

Build Volume: The maximum print size is 256 x 256 x 256 mm³ [1-3, 6].

Kinematics: It utilizes a Cartesian coordinate motion system , which is commonly referred to in the community as a "bed slinger" .

Speed: The toolhead can achieve a maximum speed of 500 mm/s and a maximum acceleration of 10,000 mm/s² [2, 3].

Calibration

Here is the step-by-step calibration guide for the Bambu Lab A1, drawing from the provided sources.

Note: While the Bambu Lab A1 relies heavily on automatic calibrations, the standard procedures for manual E-steps and PID tuning (which generally apply to open-source Marlin/Smoothieware printers) are included below based on general 3D printer tuning principles found in the sources.

1. First-Layer & Bed Leveling.

Common defects

1. Heatbed Cable Failure (Official Recall & Fire Hazard)

• Symptom: Unstable temperature readings, heating issues, power loss, short circuits, or the heatbed cable sparking and burning through its insulation .
• Cause: The root of the heatbed cable (where it connects to the printer base) is susceptible to fatigue and damage from excessive bending.