New P1s owner. I’ve been running calibrations for my various filament types, and here’s my confusion.
The flow rate calibration seems to be stored in a custom filament profile, which makes sense. But the K factor appears to be stored for a particular slot in the AMS, regardless of what filament type is loaded.
When I change the filament types in the AMS, it appears that I have to go into the device section of Bambu Studio and re-enter all the K factors for the filament types I’ve loaded. Is that correct or am I misunderstanding something?
If the Flow dynamics calibration is really to calibrate for a given filament type, why is it not updated when I change filaments?
Welcome, congrats and happy printing
If you are using Orca slicer and put in a pressure advance value in the filament settings, this will be in charge, doesn´t matter what K-Factor is in the AMS. If there is no pressure advance value in the filament setting, then it takes the K-factor from AMS. But there must be a value in the AMS more than zero (I put in a K of 0,001)… For Bambu Studio I don`t know if it is the same.
K-factor and pressure advance is the same.
Thanks. From another thread, I understand that you can change the K-factor in the filament profile by adding in some G-code. Bambu Studio does not off a setting for that in the user interface so you have to add the G-code for it.
I’m just trying to understand what’s going on with the K-factor that’s entered for the AMS. When I switch from, say PLA to PETG, the printer obviously knows that the filament is has changed. You can see the new filament displayed in the Device section, in the AMS graphic. But it keeps the old K-factor for the previous filament. Seems strange that it doesn’t change the K-factor to go along with the filament change.
When you start a print job, the k values for the filaments are shown in the slicer. For, in this figure, it will change the k value between the filaments in positions 2 and 4. In opoose, filaments in positions 1 and 3 will not, as I didn’t specify the PA profile.
^^^This. And the added advantage that you won’t be wasting time at the start of every print trying to have the machine lidar deduce the correct value, when it’s already known.
