THANK YOU SNAPMAKER!
This is exactly what we had hoped for: good quality FDM capabilities for our HS Engineering STEM Lab (Prusament Mystic Brown PLA) that can be quickly achieved by novice staff and students.
Video: four simultaneous PLA Benchy tests
SunLu PETG Benchy successful (not perfect):
Z-offset +0.1mm
Nozzle 215C
Elmer’s Washable School Glue used on bed (very thin layer)
Bed temp. kept at 70C for entire print
“Normal” quality Luban profile
'Will try higher PETG nozzle temp for more consistent appearance, but already good enough for student prototyping. Noticeable odor with PLA, but NO detectable odor with PETG (why we bought over 100kg of it!)