Blobs On Nozzle - Snapmaker 2.0 Troubleshooting Manual

Hardware
- If it doesn't, then check whether the Laser Module works.
- If the Laser Module works well, then the Printing Module itself is broken, replacing it might solve
the problem.
- If the Laser Module won't emit blue laser light (or won't stop emitting it, for that matter), then
something is wrong with the Controller. It might be that the customer has connected the
toolhead cable in the wrong direction, and the Controller and the cable is damaged as a result.
Replace the Controller. Then check whether the 3D Printing Module and Laser Module works
with the new Controller. If not, these two modules may also be broken and need to be replaced.

Blobs on Nozzle

A blob (see pictures below) happens when the filament is still under pressure from the 3D Printing Module 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 mid-printing.
Possible Causes
• Print speed is too fast.
• The first layer fails to stick to the Print Sheet.
• The filament is compromised.
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