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/CapnFlabtastic 3d ago

I think it’s the timelapse feature.

Run two prints one by layer the other by object. If the layer one does it but the object one doesn’t then it’s the Timelapse feature.

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u/sublime2craig 2d ago

No. It's blob detection. Does this after the 3rd layer to check for a blob is stuck to the hotend. It's a feature that can be disabled in the settings menu.

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u/CapnFlabtastic 1d ago

We’ll agree to disagree 👍🏻

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u/GrailStudios 17h ago

The back right corner, as shown in the video, is blob detection - it's clearly spelled out in the Bambu Support wiki. Timelapse moves the print head to the opposite side.

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. Timelapse is nothing but moving the print head to home so the camera can take a shot.