X Y slipping skipping or other
in the love hate relationship with my vcore 500 a new problem occur:
i was trying to print the square tower of the pressure advance calibration protocol when i notice i was regularly shifting in diagonal.
i don't understand as i heard no noise from the motors, the grub screw are real tight and the belt tension seems fine ( can deflect to the point of touching the other when pinched, but don't flop ) i had done a frequency test: see pictures
and now i notice one of the belt is quite mangled and it as worked for like 1 h top... i have moved the gantry by hand before to feel any grab or anything and it was fine, i did checked because after initial install i had a belt slipping onto the edge of one of the guide bearing causing a bad grabbing so i re-did all the belt install . had it deformed the belt ? ( i heard that it was not so rare)
i wrote this post because i would like to found the cause of the problem so it doesn't show up latter.
i will had pic of the belt as i unbolt everything
17 Replies
redoing all the motors cages i found out that the lower belt drived by th right motor want to run over the shoulder of the bearing every now and then so i checked the height of the motor pulley and it was as instructed but i tried to lower it as it want to go up .... it seems to have done it the belt stay at is place but i still got a consistent layer shifting
Anyone can tell what could cause this kind of layer shifting they are really uniforms and no motors skip
I think it is caused by the drag of the filaments as i swithed side for the older the way of the shifting change too but it is not normal for the printer to shift with so low force applied to it
i am still working on this problem and now one of my motors gave me this error TMC 'stepper_x' reports error: DRV_STATUS: c0130090 s2vsa=1(ShortToSupply_A!) olb=1(OpenLoad_B!) cs_actual=19 stealth=1 stst=1
i checked the wiring everything seems good so that indicate a defect to the driver ?
now the printer is skipping like crazy
sensitive-blue•12mo ago
First of all, you're grossly overextruding, you should calibrate extrusion before going after pressure advance.
nope just checked when told to do 100mm a 100mm went out
the first pick look gross beacause of a recycled petg filament that i don't get to work on any printer
sensitive-blue•12mo ago
Good, but after that you should set up extrusion multiplier by observing printed test parts
Your top layer is bulging a lot, which suggests you should extrude less.
ok is there any reference test to do when my printer is up and running again ?
yeah i see what you are saying
sensitive-blue•12mo ago
Teaching Tech
YouTube
3D printer calibration revolutionised - Step by step to better prin...
This started with a request by my Patron magruder13: make an all in one calibration video to avoid needing to go through multiple old videos. Rather than just rehash into one video, I’ve gone a lot further:
https://teachingtechyt.github.io/calibration.html
UPDATE: This site has received a major update. https://youtu.be/9kDK7czgMxc
Say goodbye...
but for now i can't even home the printer it is skipping like crazy
and i don't understand why
sensitive-blue•12mo ago
stealth=1 stst=1 are you using stealth chop? Try disabling it!
i don't know what this is so unless it come std on it no
i read about it on some forum but as i sure not enable it i overlooked it
sensitive-blue•12mo ago
I think it's default for standard setup, performance disables it, but it requires active cooling for steppers
"c0130090 s2vsa=1(ShortToSupply_A!) " usually means bad or faulty wiring, you said you checked it, did you check the connector?
If you're suspecting driver, you can switch it with extruder's driver and see if it will work
yeah all pin are in and no wiggle
i will unplug all and check continuity with a multy meter
all 4 wires have good continuity from one plug to the other
how do i disable stealthchop to go to spreadcycle mod ? : i quote klipper 3d "It is recommended to always use "spreadCycle" mode (by not specifying stealthchop_threshold) or to always use "stealthChop" mode (by setting stealthchop_threshold to 999999)" i go in overide and wrote a stealthchop treshold=0?
sensitive-blue•12mo ago
Yes
[tmc2209 stepper_x]
stealthchop_threshold: 0
[tmc2209 stepper_y]
stealthchop_threshold: 0
yep fixed the skipping
... hate prog man you look for 1 h a the hardware because of the sound of it and 2 line of code make it go away ...
anyway thanks that one part of the problem done i will try to reprint something and see if the shifting is still there
sensitive-blue•12mo ago
To be honest, it shouldn't have fixed. There's probably excessive movement resistance. Probably belt is binding somewhere or you overtightened one or several bearings.
it doesnt have much resistance moving it by hand