RE: Failed Y-calibration of a new CoreOne
Thank you for checking! Good to know that the Prusa app does a good job with the frequency measurement.
So maybe the build technician in the Prusa factory was using some other metric to set the belt tension, which systematically deviates from the frequency measurement? Maybe some force-over-distance gauge, or maybe just his "calibrated thumb"? 😉
RE: Failed Y-calibration of a new CoreOne
When we fit new belts to machines, we always over tension them from new as they will relax, but these are steel wire embedded timing belts, and we never drop the tension lower.
These belts are different and even support state to drop all tension then tighten to the correct frequency reading, so maybe the over tensioning is done on purpose ? but I really don't know in this particular case. Maybe someone from PRUSA could explain?
What I do know is after I have done all my pre-flight checks so to speak, the printer is printing beautifully with the supplied roll of prusament PLA. Even 65 Deg Overhangs have come out spot on. Next step PETG
So far very pleased with this printer.
Normal people believe that if it is not broke, do not fix it. Engineers believe that if it is not broke, it does not have enough features yet.