Nozzle moves to the upper-right corner during printing and leaves a string

Hi everyone,

During some prints, my printer moves the nozzle to the upper-right corner, then returns to the model. While it’s away, filament oozes from the hot nozzle and leaves a string that sticks to the print when printing resumes.

Has anyone seen this? My timelapse is set to Instant.

Printer model: A1
Filament type and brand: Any Bambu Filament
Nozzle temperature: 220
Bambu Studio version: 2.9

Thanks for any suggestions!

If I’m interpreting your description correctly, that’s the A1 Series Nozzle Clumping Detection. To do this, it moves to the side and tries to detect whether there’s a blob stuck to the nozzle.

nozzle_clumping_a1_v1

That’s right. That the exactly movement it does.. And then it continues the printing. But during this movement, specialy when it comes from a high Z position, the filament continues to “exit” the nozzle, creating a string.

Then why not just turn it off? :grin::+1:

I’d just recommend staying by the printer at least until the first layer is printed.


It’s also possible that your time-lapse are a contributing factor, depending on the mode. I’m not familiar with an “instant” mode… There should only be two modes: Traditional Mode and Smooth Mode.


Otherwise, if you have a fundamental problem with ozzing, please describe it in more detail; I’ve only addressed the topic of your original post. In that case, I would strongly recommend that you edit the title of the thread as well as the post itself. Maybe even add some photos.

And, above all, a lot more information, such as which filament you use and what settings.