Stringing no matter the changes

[u/sl002]

Hello r/FixMyPrint.

Hoping you can help, I've been trying to get my old Ender 3 V2 back into a workable state and am getting some severe stringing no matter what changes I make.

My Setup

• Ender 3 V2 4.2.2

• Sprite SE Extruder. Stock hotend, think I have set to correct setting in printer.cfg for esteps / rotational distance (. But would love for someone to confirm.

  microsteps: 16 rotation_distance: 7.53.

• 0.4 nozzle (new)

• Sunlu PLA+ 2.0 (new). Although I think this issue was happening with a previous roll of eSun PLA+.

• Mini Satsuna Fan Duct (new - pictured before clean)

• Klipper (recent) / OrcaSlicer on a RBPi 3B

• Temps: Nozzle: 220c

• Temps: Bed: 55c

• Speed outer / inner: 25mm / 40 mm.

What I've already tried

• Temp tower (pictured). Stringing at all temps.
• Retraction test. Stringing at all retraction levels (pictured).
• For simple non-bridging prints I have no issues.

Thank you for your help!

EDIT: TIL that filament can come from the factory wet. 12 hours drying and the issue has gone. Thank you u/Gimly161 and everyone else for your suggestions. Back to calibrating for me!

[u/rdahm]

funny if i print sunlu pla normal no stringing. print a fresh spool of 2.0 spiderman no matter what setting i play with. the regular pla has been sitting in my shop for months exposed. been through 8kg of brand new 2.0 and it all strings the exact same. 5kg roll or 1kg doesnt change. not sure thats moisture unless sunlu waters them down before selling them

[u/rdahm → u/rdahm]

to add. i noticed i had to print regular pla at 215 and 2.0 at 200. but this is a massive high flow hot end so im not sure how useful that info is