Input Shaper Calibration
To anyone that has actually done this procedure on a Core One: did your Z-Axis sound like it was grinding metal shards as the cal procedure moved Z down to the middle?
In my runs, the Z move noise is pretty troubling, as if whoever wrote that part of the test is only driving one Z motor; the rest of the test is nearly silent.
The results are also a bit suspicious ... factory is Ei 60 and EI 50, but the cal procedure says I should be using ZVD 52 and ZVD 52. I have pretty fair walls, zero VFAs, but corners are atrociously bad. Linear advance shows 0.05 is probably best, and profiles set it at 0.047 (shrug).
What have you guys seen for results?
RE: Input Shaper Calibration
Did you purchase and upgrade kit and build it yourself, or get the printer from Prusa fully assembled? (Starting point for my questions....)
RE: Input Shaper Calibration
The three Z motors are driven in parallel. From one stepper driver. Can't be driven independently. In fact, if you manually turn one (or any two) the third will move as well.
Cal procedure on mine gave different IS values each time.
First X 52Hz ZVD, Y 54Hz ZVD, then X 45Hz MZV, Y 53Hz ZVD, then X 51Hz ZVD, Y 53Hz ZVD.
Don't know if it's any better than the factory defaults.