opened 05:00PM - 13 May 25 UTC
closed 05:19AM - 11 Jun 25 UTC
bug
Printer
### Bambu Studio Version
2.0.3.54
### Where is the application from?
Bambu La…b github releases
### OS version
Unrelated
### Additional system information
Unrelated
### Printer
Bambulab H2D
### How to reproduce
1. Using High Flow 0.4mm nozzle.
2. Print something in PETG HF.
3. At layer 3 and layer 10, nozzle would go to purge strip and dip into it.
4. Now there're purged old filament sticking on the nozzle.
5. Sticked filament would eventually end on part, destroying wall quality.
### Actual results
For this print, the first layer and concecutive layers were very clean, until the nozzle brought some purged poop back to the wall. And it's sticking on the next layer right where the travel ends.
### Expected results
Before the release of official firmware, you should either:
1. Disable this feature (I assume it's some sort of clump detection or pressure advance calibration?)
or:
2. Make the first purge line shorter, move it a bit, let the new purge move to somewhere that would not dip into old purge line.
I noticed the same behavior to happen on both PETG and PLA, but because bambu nozzle doesn't have anti-sticking coating, it's very obvious on PETG + high flow nozzle.
I don't think Bambu would need my log because it's a very consistent behavior, all you need is just a high flow nozzle and the petg hf filament.
### Project file & Debug log uploads
1. Create a new project, maybe just a benchy or calibration cube, anything.
2. select filament and nozzle type to petg hf and high flow nozzle.
3. print and watch how the nozzle dips into the purge strip, while it might not bring some filament EVERYTIME, it's dipping into the strip and causing a high chance of sticking some filament back.
### Checklist of files to include
- [ ] Log file
- [ ] Project file