P1S

The P1S is an FDM 3D printer from Bambu Lab with a 256 x 256 x 256 mm build volume.

Specifications

Hotend: The P1S features an all-metal hotend and a direct drive extruder with steel gears, capable of reaching a maximum extrusion temperature of 300 °C [1, 2]. Out of the box, it comes with a non-hardened stainless steel nozzle and extruder gear, but it can be easily upgraded to hardened steel components to handle abrasive filaments .

Bed: The printer comes standard with a dual-sided textured PEI plate, which is swappable with other Bambu Lab build plates . The heated bed can reach a maximum temperature of 100 °C [1, 7, 8].

Chamber: The chamber has a maximum operating temperature of 40 °C.

Calibration

First-Layer & Bed Leveling

• Step: Go to Settings > Calibration on the P1S screen, or use the "Devices" tab in Bambu Studio/Handy, and run the Auto Calibration routine [1, 2]. The printer will automatically perform Auto Bed Leveling (ABL) and calculate the Z-height prior to the print [3, 4].
• Expected Outcome: A perfectly leveled bed and accurate Z-height, resulting in a flawless, squished first layer without manual knob adjustments [5, 6].

Common defects

Defects, Weak Points, and Hardware Failures

1. Heat Creep & Extruder/Nozzle Clogs

• Symptom: Prints fail mid-way (often between layers 50–70). The extruder gears grind a flat spot into the filament and slide over it, resulting in severe under-extrusion or a total halt in filament flow .
• Cause: Heat creep caused by the internal chamber getting too hot.