Ringing/Artifacts Only in One Direction?
I've been having print issues where after calibrating input shaper, there is prominent ringing on only one side of a print. This ringing seems to only happen when the y axis moves in the positive direction, so it's not specific to the side but the gcode motion positive y motions.
I've had this problem since I built this vcore 3 500mm. I've swapped all the idlers, flipped every linear rail, swapped the x axis linear rail to mgn 9. Swapped the x extrusion, swapped the belts in the complete 3.1 upgrade. I've swapped the motors, changed the joiners 3 times from the 3.0, aluminum 3.0, 3.1, to the aluminum 3.1 from funssor. I think I've swapped every single possible component of the motion system, I've disassembled the frame so many times to realign, and there's still the same issue on every single print. I've swapped out the cable chain for a chainflex cable, and now I have a canbus system.
Resonances have looked perfect since I made the printer, and so do belt tensions.
I've spent countless hours on this issue I have no idea what's causing it.
12 Replies
Using prusaslicer, dragon UHF, ratrig vcore 3.1 500mm
This one focused badly. But from what I see those are not the ringing artifact you see. Ringing occurs only in one direction and it looks like the side of the print dragging in the direction of the movement. Just like on windows xp where you could make a trail of mice cursor. This one occurs in both directions.
Maybe try an orca slicer. See if that changes. If not , then probably hardware related, but doubtly so if you have rechecked everything
ive tried different slicers, but i will try orcaslicer again with the same print
i think it's definitly hardware related but the only part of the hardware I haven't replaced are the motors and the eva mount
does anyone have any ideas on what hardware related issue would cause artifacts on only one side of the print?
Incorrect shaper, excessive vibrations because of slicer or stl file. F.e. bad stl file can result in awful circles accompanied with a grinding sound, like 2 motors are connected together and spin. In your input shaping enabled?
Maaaaybe uneven belt tension or too loose belts. You can check this by printing a small tool that hooks to the belt. It only can tell you whether they are evenly tensioned. It won't tell how much
uneven heating, like if a vent is clogged. If you rotate the part in the slicer, does the issue persist on the same side, or does it swap?
It’s related not to the direction of the face, but the motion of the y axis. When I switch the slicer and reslice, the ripples go to the other side
tried many different STLs, so its probably not that. I've tried dozens of shapers, so not that either. it occurs even with accels at 400.
ive played with belt tension too
but ill try again
so it could be cooling only hitting from one side?
probably not, I have a 4028 server fan and the duct is two sided
ive tested the airflow and its more than enough
i tried a print with no fan and it seemed to actually improve quality, though there still are some issues
I started to run tests myself after reqcquring a working adxl. Even under max accel of 7k i get sliiight ringing. So its not an input shaper for me. I checked squareness and adjusted by a hair the y axis due to upgrading the frame. But what caught my attention were the belts. Near the right rear motor the belts looked like they are constatnyl riding a bit on top of the bearing resulting is ripples and also near the face side too, but on the other side. I suppose it could also affect the printing quality,
that would definitely cause issues. Align the belts/bearings and good luck
that could be it, maybe ill try resquaring the frame to fix that and test again
im not exactly sure how to do that
To do that check for squareness.
Mine was top notch the first time, but after enclosure upgrade just wiggled 1mm the gantry.
Loosen the motor screws on both motors and wiggle the head left and right. It should put the motor pulley in a more correct position and tighten them down. That should fix the belt rubbing problem