Hi all, I have bought a second hand Creality Ender 5 pro. So far so good. I checked the belts, tightened the bolts (where needed) and successfully ran it for a week before deciding "you know what this printer needs? Klipper firmware." So off I went and installed Klipper.
Ran though all the requisite calibrations, so now the extruder extrudes 50 mm (+/- about 0.2mm) when I ask it to, my calibration cubes measure exactly 20 x 20 x 20 mm with less than 0.1mm deviation. PID tuning for hot end and the bed. But the stringing. The stringing!
The filament is 3DJake ecoPLA that I opened two weeks ago.
See picture attached (and apologies for miswriting the ^2, I had misremembered). Temperature, retraction, it doesn't matter. With stock firmware the retraction worked well at around 4.5mm retraction at 40mm/s. I can't get the stringing to stop here at like 80mm/s and 8mm of retraction and I am at my wits end.
I would greatly appreciate any pointers you guys might have for me!
I think it is best to first print a temp tower then some retraction test where you would stick with same temperature and variates distance and speed. You can use tools here to make it simple. https://teachingtechyt.github.io/calibration.html
If after that, you still have stringing, best is to test a new spool (or dry your spool) as too much humidity in pla will give you stringing whatever settings you use
I haven’t shown them, but I did print a temp tower and retraction tower when I first got the printer, which is how I got my initial 190deg, 4.5mm@40mm/s settings and those worked until I flashed Klipper. Now it seems that flashing may correlate with the filament having gotten wet.
You may want to try hotter too if you haven't yet. Printing faster can sometimes require a bit of extra heat and too low can cause a different kind of stringing.