What is the default nominal K value for PETG-HF? The AMS is showing nothing and calibrations are failing.
UPDATE: K value of around 0.02 seems to be working much better than the 0.04 default for PETG Basic. Using BBL 0.4mm hardened nozzle.
Same here! I tried 3 times and i got calibration failed every time 
I calibrated red, green, blue and black. Blue failed, red and green were 0.016, and black was 0.019. I have an E3D 0.6 hot end assembly on my X1C.
As anyone who read your whole comment should realize, unless they’re also using e3D’s nozzle, those k values will NOT work and shouldn’t be used. Poster did mention that it’s a different nozzle so I hope no one tried those with a stock Bambu Lab nozzle.
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