Bug Report: Print cooling fan behavior doesn’t match G-code on A1 mini (Firmware 01.04.00.00)
Printer: Bambu Lab A1 mini
Firmware version: 01.04.00.00
Material: PETG
Slicer 1: OrcaSlicer 2.3
Slicer 2: Bambu Studio 2.0.2.57
Model: (attached)
Issue summary:
During overhang printing, the cooling fan (M106) behaves inconsistently with the G-code and preview.
The fan:
- may turn off too early,
- or never turn on,
- or turn on briefly but revert instantly to a previous value.
This results in poor cooling during narrow or long overhangs.