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!

  • paf@jlai.lu
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    1 year ago

    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

    • Zsub@lemmy.worldOP
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      1 year ago

      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.

      • damium@programming.dev
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        1 year ago

        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.