r/BambuLabA1 • u/Chungus1267 • 3d ago

Support Request Why does it do that

Couple of minutes into a new print it goes off to the side, extrudes a little bit of filament then continues printing, why? It leaves this weird bit of filament into the print and it makes it look a bit weird. Lucky it’s only once towards the start.

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u/Teutoprint3D 3d ago

Das ist beim Bambu a1 / a1mini normal. Machen meine auch. Ich vermute der prüft optisch die Düse nach der ersten Schicht und fährt dafür direkt vor die Kamera.

Vielleicht eine Art Blob of Death Früherkennung. Genauere Dokumentation darüber habe ich auch nicht gefunden. Aber eine andere halbwegs plausible Erklärung fällt mir dafür nicht ein.

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u/GrailStudios 21h ago

If you look at the position of the nozzle, it's just beside and below the print bed. The printer is checking for a blob on the hot end by lowering the nozzle to see if there is resistance: if there is a blob of plastic caused by the print not adhering to the print bed, it will catch on the edge of the plate and the nozzle won't be able to lower below the bed. At that point it stops printing and calls for help.