Grinding on low poly arcs but no grinding on high poly arcs.
Also hear grinding in y-axis movement during bed leveling.
V Core 3.1
30 Replies
Sending video in a bit
It seems that square corner velocity has an effect on this
Bad pulleys and idlers?
Hi, this is for the same printer. We are both diagnosing. I tried a reinstall of the OS, swapping to 2209. No difference.
This is running bedmesh with a beacon. The vibrations are very noticeable on the turns.
Raising the square corner velocity (aka jerk) from 5 to 15 helps, but still vibrates.
But when changing the "min cruise ratio" (formerly max acc to decel), from 0.5 to 0.99. It becomes smooth as butter.
SQV to 15 and MCR to 0.99, on an actual print I still have the same problem.
But I wonder if setting the MCR to 0.99 is indicative of some issue.
anyone here?
I have the exact same problem, with a freshly built VCore. Thought it was a problem with the 5160's on X and Y, but if you are using 2209, that is probably not the case.... No solution found yet
okay, this is super weird: yesterday I turned on interpolation on the X and Y Drivers (5160T Pro 24V) and it got rid of the problem. Now I it's turned off again and it's still good. I haven't changed anything else...
thanks we will try this
alright, I have found the real cause: right motor was busted. I noticed, that the shaft has some axial play, so I swapped it. Now everything looks good.
Re-printed and redid the ratrig parts and reseated the motors. No change. Did you replace your right motor?
@simmck Setting the Acc to Decel to the following reduces the issue for me. IE its slowing down on arcs. But there must still be an underlying issue.
have u done IS? i had thae same on my voron 2.4, and after IS the problem was solved
Sorry IS escapes me. What is it referring too?
input shaper
Ahh right. Yes ran IS several times and also tried off. 3rd party took a look at the graphs and all looks good
but did u set ur values in ur priter.cfg?
I just save_config after running Generate Shaper Graphs command.
so u dont even know ur values? thats not how u do it. u have to tell it what u want to use. klipper is not automatic in any way
I would run the input shaper and take the recommended shaper graphs, and save it down to my printer.cfg. Heres the latest.
I've tried saving to the printer.cfg as well as just save_config. Just in case.
its not the graphs ure saving to ur printer.cfg. its the values the graphs gives u
send ur printer.cfg
Here it is. I think my input shaper vales are better now I put the ADXL closer to the nozzle.
u have to uncomment ur shapers
[input_shaper]
#shaper_freq_x: 15.85 # frequency for the X mark of the test model
#shaper_freq_y: 35.7 # frequency for the Y mark of the test model
shaper_type: mzv
#shaper_type_x: mzv
#shaper_type_y: mzv
if u have eva 3 there a mount on the tool head for the adxl
Ok thank I'll try it. I thought the save_config saves to the section Save_Config section. Not just input shaper, but the pid, and bed levelling values.
Also thank you very much! It is running smoother.