Manual Input Shaper Calibration Print Problems
I am following the tuning guide from RatOS documentation to calibrate a V-core 3.1 400mm printer.
Using the Manual Input Shaper instructions from the Klipper documentation here;
https://www.klipper3d.org/Resonance_Compensation.html
My Ringing Tower print has holes all through it. How do I go about fixing this?
8 Replies
Nozzle diameter? Speeds? Height?
This look to me like too high pressure advance value to me
Nozzle is 0.4mm, Max speed is 100mm/s, Layer height 0.2mm. As per the docs, pressure advance is set to 0 (disabled) for this print. My calibrated pressure advance for the PETG filament being used is 0.065, i'll try another print with it set and see how it goes.
New print keeping my calibrated pressure advance on, is much better, but still terrible quality in my opinion.
0.065 PA is too high in my opinion.
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Try running this. 0 bottom, top layers,two perimeters, small brim. I print 35 mm high with 0.0025 step, which is usually enough.
Use your print accelerations and speeds.
The corners you see with these settings should be transferable to real print as well.
Then print the input shaper calibration
The usual stuff applies - assumption is that extruder and everything around it is correctly done, filament is sufficiently dry etc.
But to be frank - I never successfully ran manual input shaping. ADXL is required to get accurate results. More importantly, if you do not have accelerometer, you have no way to tell if you frame is sufficiently square and your belts tensioned properly.
Yeah, I have an ADXL on order so when it arrives will be using that. However still trying to get things tuned as best I can for now.
Used the second print to manually calculate the resonant value and made a new print which is much more improved. Seems that X-axis is causing the problems as it still has ripples over the whole surface compared to Y-axis.
