PETG on Bambu Lab A1 Mini
youtubeTest on scrap first. Settings are starting points from the linked source. Dry hygroscopic filaments before printing.
Printer
Bambu Lab A1 Mini
Filament brand
eSun
Filament type
PETG
Slicer
OrcaSlicer
Nozzle size
0.4 mm
Nozzle temp
240 °C (stock Orca eSun PETG, kept)
Bed temp
65 °C
Speed
max volumetric 6 mm³/s (stock 20)
Retraction
0.2 mm
Cooling
fan 30% constant; layer time 20 s (stock 30–100%)
Notes
3D Print Daily: the stock OrcaSlicer eSun PETG preset on the A1 Mini blobbed, over-extruded and the print came off the plate. Fix was lowering flow ratio slightly (aim for slight under-extrusion), cutting max volumetric to about 6, fan to 30% and retraction to 0.2 mm; a popping sound after retractions means retraction is too long. Result was clean and shiny with no stringing.
Source: 3D Print Daily · 2025-07-14