I have the same problem. I cannot eliminate stringing. It’s fine and wispy and occurs every time there is travel.
Things I have tried:
- Normal zhop
- Disabled zhop
- Disabled retraction on layer change
- Disabled wipe on retraction
- Retraction 0.2mm → 5mm (0.2mm per step)
- Nozzle temperature 190-255 (5c per step)
- No part cooling
- Max part cooling
- Orcaslicer flow test is bang on
- Dried Bambu Lab Tough PLA overnight at 50c
- Dried and tested Bambu Lab PLA Basic
- Replaced hot end with brand new hardened steel one + calibration
- Tried printing Orcaslicer retraction tower in latest Bambu Studio
- Disabled timelapse
- Deleted timelapse G-code
- Printing object in different location on the plate
- Using external spool holder instead of AMS
- Cold pull on both nozzles
Going to have to put a new list of ideas together tomorrow. Wasted multiple days on this so far but at least I am learning a lot. I am guessing there is something fundamentally wrong with my unit. Hopefully not though.
Let me know if you see something I’ve missed.
Edit: Next step will be applying some thermal paste between the hot end and block to see if it’s a heat transfer issue.