Uneven texture 3.1.
I have been battling this for some time now. The prints come out uneven, wavy and just overall shit.
The resonance is terrible as well.
What i did:
I have changed the belts to try and fix this, have the back metal motor plates, to access everything.
I even fixed the belts snagging on pulleys.
The printhead was reprinted along with x rail holders on both sides as they were falling apart. They are as solid as rocks.
Tried various speeds, accels and resonance profiles.
The printer is mechanically sound, bed very straight.
Honorable.mentions:
When doing the resonance testing I clearly hear rattling sounds. I have checked everything, all screws tight. The only thing that could rattle is the x carriage. The small vibrations are also there when moving the printhead very slowly by hand. Can be heard in the video.
What can it be? Should I change the carriages?
I don't thing that could be anything near the motors as the sound moves along with the printhead.
12 Replies
I'm not sure I see the wavy texture you speak of, could you share the STL so I can see what the model is supposed to look like? Mostly I just see the weirdness in the corners as the print gets taller. Which could be a pressure advance thing or the print itself is wobbling because it doesnt have a stable base to sit securely on the print bed.
Its not the stl. Every print looks like this - like shit.
Here is a photo of another thing
I'm not blaming the STL, i mostly wanted it for troubleshooting purposes and to see if i can recreate the problem so I can try to diagnose it
I see. Well then. Here i enclose the stl and also the gcode. They might be a bit different in spacing as it is not the final design. I suck at modeling
But as I said. Its overall a problem in all prints. They come out quite bad. I see ringing, but my profile does not help much. Nor MZV nor 2hump-ei. I have a nozzle mounted accel only, because the others broke.
Addition: I dissassembled everything, cleaned out the carriages, relubed them with silicone oil, printed a new pair of xy joiners, because i saw that something was off when assembling back. This repair did something incredible (onlky to Y axis). This can be sen in the input shaper test with mzv up to 25k accel. Which is crazy. However, the X axis is a mess. The print - coron cube looks like this. X was dissassembled and assembled anew. maybe it needs parts reprinting as well, but i cannot see why. Everything is tight as hell.
what are your pressure advance setting, and retraction settings?
Hi, did not update yet. I redid the toolhead and tuned pressure advance. It was by a lot incorrect. Don't know how, but maybe an old setting when.i used HF adapter. Belts tightened correctly and somewhat decent and correct Y axis input shaper. X is a mess I'm ashamed even to show, but now the input shaper at least somehow works and prints got a lot better. Still some ghosting. I recall my toolhead needs just a total swap, either to ratrig new one or entirely go with hextrudort setup. Something vibrates there and I secured literally every part that can be secured and it šis not.help the x axis input shaper at all
Apart from messy seams, probably due to retraction and temperature, it's okay, but still for from my a1 quality
