- A blob happens when the filament is still under pressure in the print head when a layer is finished. This results in a short burst of over extrusion: a blob, (also known as Z-scaring or Z-seam). It can also occur, at the beginning of or within a layer.
- Working speed is too fast
- Retraction feature is not enabled
- The first layer does not stick to the printing sheet
Replace a new hot end kit and try again. There is a spare hot end in the box.
- Here is a video on how to change the new hot end kit.
Check if the blob affects the circuit board of the 3D printing module.
- Get the booting log from Snapmaker Luban and check if the controller recognizes the printing module
- Here is an article for your reference.
If the controller cannot recognize the 3D printing module, the printing module may be faulty. Please contact firstname.lastname@example.org for further help.