Horrible ghosting
I get very bad ghosting at any accel and speed. Even if I go at 50mm/s 500mm³/s. What could be the cause? Its also same bad on X and Y.
20 Replies
dependent-tan•17mo ago
Is this a new printer setup, or happend suddenly? Did you tune your configuration with input shaper?
sensitive-blue•17mo ago
Its new and I havent done input shaper yet since i have problem with wiring adxl.
But for example my V0.1 without input shaper does 6k with no ghosting at all.
dependent-tan•17mo ago
So to be sure - there are NO input shaper parameter in printer.cfg at the moment?
You can do manual input shaping without using ADXL
sensitive-blue•17mo ago
Yes
Its set to 0
How?
See the Ellis setup guide
Or it should be in any klipper setup guide.
sensitive-blue•17mo ago
Alright
So I did input shaping
sensitive-blue•17mo ago
sensitive-blue•17mo ago
Is it bad or good?
I was in a hurry and didnt have time to properly secure cable so Im aware this might destroy my mesh a bit.
dependent-tan•17mo ago
The y-axis looks a litte strange to me. the second peak should not be there. Please secure the cables and try again. X axis looks fine!
Sorry - did a clooser look right now to the first Y-Mesh. The two peaks are from different axis! THe fisrt one comes from Z and the second from Y only ?!?! Is your ADXL tightend briefly? thats strange to me....
sensitive-blue•17mo ago
Its tightened securely
And now I also got rid of wobbly cable
Almost nothing changed
sensitive-blue•17mo ago
dependent-tan•17mo ago
phuu - that's interesting. Rails are also running smoothly in Y?
dependent-tan•17mo ago
3D Printers & a Whiteboard
YouTube
How to Read and Analyze Input Shaper Graphs Generated by Klipper
This video is supposed to be a brief overview on what the input shaper graphs can tell us. It is the first video of a series of videos which will give a more in depth view on the kinematic system and input shaping in Klipper.
As always: feel free to jump to those parts, that help you with your problems:
00:00 Intro
00:57 What we can learn from...
dependent-tan•17mo ago
Have you seen this great explanation of graphs - at the end there are some shapes with the root cause, from what I can remember. Sorry, I've no idea at the moment 😦
sensitive-blue•17mo ago
They do a little typical clicking.
But I always had a bit of it on rails.
Not only on ratrig ones.
Tho X runs a bit smoother than Y
Here is comparission
sensitive-blue•17mo ago
dependent-tan•17mo ago
hmmm, nothing strange I'd say. Y ist always a bit more strong to move - they are two of them 😉
Did you check the end of the video - sorry it's a bit busy today...
sensitive-blue•17mo ago
Ill check it today but a bit later.
Im not at home now and can't watch it.
Makes sense
Alright
So I just found the issue
And its so dumb
Pulley on one of xy motors was a bit loose
Printer also started to skip layers a lot.
Today motor started spinning freely without pulley
That leaded me to my diagnose
Sometimes its better when things break fully then partially, that lets you see they were broken
dependent-tan•17mo ago
Ahh good to hear, that you found the issue - and thanks for sharing it. Happy printing 🙂