@jakobdam Here are the results using the Bambu PETG-HF filament using a standard 0.6mm Bambu hotend. Some interesting results.
I did two runs the first 10-30 mm³/s, in 0.5 mm³/s steps this was completed with no problem. Wall thickness consistent at 0.92mm all the way. So I did another test, this time 10-50 mm³/s in 1 mm³/s steps. This, I judge, failed at the 24mm level. Which represents a flow rate 34 mm³/s
Here the thickness info
I thought that the 0.6mm nozzle test would fail before the above 0.4mm test. But this isn’t the case. Note. I was having an issue with the filament sticking to the PEI textured plate. I changed the nozzle temp to 245 First layer and 245 other layers.
My calibration results are
Flow ratio 0.9025
Pressure advance 0.024
Max Volumetric speed 25 (Though I believe that this can be set a bit higher)