What can I do when my x axis input shaper results is so poor at 3humpei and my y axis is mzv.
I have adjusted the a and b belt tensions twice. I have squared the gantry against the back and adjusted it to what feels and looks square to me.i followed sovols video.
Movement feels smooth and free of nosies or resistance etc ..
The printer is stable on a level surface .. at one point about 8 months ago I managed to get it to suggest mzv for x but it seems to think it is much poorer now always suggesting 3humpei no matter what effort I put in to trying to improve the situation.
What else can I do?
Should I just accept 3humpei and drop my acceleration in the printer cfg to have a max acceleration of the suggested 3000?
The Y axis uses the same belts and motors but moves MORE mass.
What Z height are you testing at? If it gets significantly worse when elevated then check the frame structure. If it is about the same check for side to side (X axis) movement of the gantry.
Yes Y is better.i am not sure the z height. When I run shaper_calibrate it moves to a specific position somewhat in the middle of the print volume it seems.
Y motion is very smooth. X motion isn’t bad but seems like there is more resistance. Maybe I should put some lube on it?
i feel like this one pulley might be tilted. It seems a little tilted. Could this be my issue? Does it look tilted to anyone else? The pulley at the top.
Yes it’s still under warranty but I have to go through Amazon email address. Maybe I should buy replacement ones for all of them so I can have them ready. I hope it isn’t hard to replace them.i don’t know why they would be tilted.
Someone else responded and told me to perform the belt tightening with links to the videos that I told them I already viewed and followed and that my belts are adjusted in the original email. This is also a day between these responses. So effectively no meaningful support yet…
Did you figure it out? I got my SV08 just a few days ago and while everything (bar the bridges which come out awful) is working so far and I’m in the middle of tuning the printer but I also got awful results from the input shaping test. Also does your X axis feel kinda stiff? Could it be due to the linear rails not being properly lubricated?
I also hav issues with bridges and overhangs, but I have tuned everything I can think of. It’s better than it was when I first got it, but I have just accepted it for what it is at this point.
My Y axis moves freely with little force needed to smoothly push back and forth. My X axis does not behave this way. I don’t know if it is supposed to feel like Y or not. Maybe someone else can give their opinion. I can say that if I loosen the belts entirely to adjust belt tensions and square gantry etc.. that the carriag slides freely.. seems well lubed and is smooth side to side. When the belts are tighted back in place it is not as easy to move side to sidebas the Y is to move back and forth.
I did discover that the smooth pulley on the left side of the X axis is somewhat tilted and could be the cause of the poor X axis input shaper. I removed the shaved and determined that the shaft goes in slightly tilted.. not 90 degree angle as expected . So it doesn’t seem like the pulley itself but actually the bracket that the shaft sits in not aligned properly from the factory.
Check your pulleys on X and see if they all look straight to you and the belts are positioned normal etc. maybe watch the pulleys when it’s in motions etc too
I’ll look at the pulleys then. Everything else seems to be on point so I wouldn’t know what else it could be. Some people suggested loose screws which I think would be s good bet but I already tightened everything (slightly more than I would usually do at that) so I don’t think it’s that.
I also tightened everything. Nothing else I can adjust at this point other than the pulley tilt. If you figure it out let me know! I have a replacement bracket supposed to be coming to me.
Hey, I think I may have figured it out or maybe not. it at least solved it in my case.
For some reason Sovol’s version of Klipepr has the [resonance_tester] variable set to stupidly low hz. Comment [min_freq] and [max_freq] and it’ll instead use Klipper’s default values instead. The previous ones were a bunch of hogwash.
These are my results now (Y still sucks but I haven’t tried fiddling with anything to fix it yet).
Nice to see it helped and yeah, Y is also weird on my end. Does your graph look similar to mine? The weird peak I got makes me think I may have a loose bolt but I can’t find anything.
