I am printing the same object over and over. By default the Flow Calibration runs each time. Is it beneficial to have it run each time or would the printer re-use the calibrated flow value from the previous run?
And bonus question: I am using Bambu Basic PETG. The object adheres to ~75% of the bed. When I wait for it to cool it is very hard to remove, but it is easier to remove when still hot. Is it really the best to wait for it to cool? When I print the same object in a P1P/S it is significantly easier to remove. But with that said, most of my build plates are significantly older in terms of tech and hours of print time!
EDIT: this is on the included PEI plate, no glue or anything else.
I don’t know the formal answer but have turned calibration off before when printing additional parts/plates on the same kind of plate with no issues.
And the textured plates like textured PEI are issues for reliable calibration anyway. (Apparently corrected for now…)
Don’t know for certain if it remembers the last calibration or not but it hasn’t seemed to affect my parts. YMMV, though.
On the build plate thing you don’t say which plate material you are using or any helpers like glue, glue stick, or liquid. That may be a nonsense question with PETG but different plate materials behave differently. For example, PEI tends to release PLA better after it cools but no idea how it behaves with PETG. And age/use can change things and either make models adhere poorly, or in some cases it can get harder to break parts free.
That is true for the other bambulab printers but not for the a1 series. It measures flow in a different way. Basically it makes a giant blob in the nozzle wiper and measures the requested pressure against the real pressure in the nozzle and therefore it adjusts the k.
Does it makes sense to do it everytime? I don’t know. Bambulab says it is stored in the printer. If thats true and nothing changes at your filament f.e. it gets wet or something else, the old value should still be valid. And therefore it is not necessary. But it can compensate for changes to the filament itself. I turn it on for every print I would like to have the best optical results.
The other question is, how the printer uses the stored k value and if it is still using it, when using non bambulab slicers or presliced gcodes.
I do always for new filament a manual calibration test in BambuStudio. Also write down all the output in a sheet for all my filament brands. If output is same I write this down. So I know what filament is using Manual Preset.