Features and description
There is a drooping filament on the lower surface of the model.
Reasons, Diagnoses, and Solutions
Lack of Support for Suspended Surface Structures Causes the Lower Surface to Sag
- Diagnosis: Check whether the suspended surface structure of the model (≤ 30°) is designed with support.
- Solution: In Expert mode, enable Generate Support Material under Expert > Support to automatically generate support, and set the support parameters.
Dynamic Overhang Speeds Parameter to Optimize Overhang Print Quality
- Diagnosis: Check whether the dynamic overhang speeds parameter is enabled in the Slicer by going to Expert > Speed > Enable Dynamic Overhang Speeds.
- Solution: Enable the automatic overhang speed reduction function through Expert > Speed > Enable Dynamic Overhang Speeds, and reduce the overhang printing speed at different angles through Overhang Speed.
Movement is Too Fast When Printing the Lower Surface, Causing the Extruded Filament to Not Cool Enough and Resulting in Hanging Filaments
- Solution: Appropriately reduce the overall printing speed through Expert > Speed.
Fan Cooling Anomaly
- A. The Model Cooling Fan is Not Turned On
- Diagnosis: Check whether there is a sound of the fan turning on during the printing process (generally PLA+ starts at the second layer to 100% enable the fan); check whether the printing fan is turned on through Filament > Cooling.
- Solution: Turn on the fan function.
B. Model Cooling Fan is Damaged
- Diagnosis: Feel whether there is air blowing out of the nozzle during the printing process.
- Solution: Replace the model cooling fan. Refer to the following resources for detailed instructions:
- Article: How to Replace the Nozzle
- Video: How to Replace the Nozzle
If none of the above methods can solve the problem, please contact us directly through us and provide logs (APP side through Me > About > Upload Log, device side through Setting > Upload Log), Gcode, STL model and phenomenon pictures for analysis.



















