popping sound started last night on an ultimaker 3, how do I remove it again

[BasHamer 2]

 

I have no idea where it comes from other than the feed on the back. So far the printer has gone trough about 2 spools in the last few weeks and probably has been on ~20-22 hrs a day for the last week.

[Zwakie 21]

Hi Bas,

To me this sounds like the bed-leveling system making tiny Z-corrections constantly. The same thing (though not as imminent as in your case) kept me confused for quite some time before I could pinpoint it.

There are some other threads around this subject that you can go see, f.i. https://ultimaker.com/en/community/33351-knocking-sound-while-printing .

[BasHamer 2]

well I can rule that option out;

1. it started mid run (6 hrs in).

2. the ticks do not change in speed as it goes around a circle; if it was a z correction then the z offset should follow a sine as it goes around the circle, and at the peek and valley there would be fewer corrections.

3. it jumps from one end of the model to another w/o any ticks if it is not extruding.

My ticks follow the amount of material, it ticks faster when building the outside walls. and slower when building the inside support structures.

[DidierKlein 729]

Does it come from one feeder?

Maybe something inside is loose and causing this noise? For me it doesn't sounds like the z or is the noise really amplified?

[JohnK 30]

Sounds pretty much the same as when my UM2+ feeder had a small blob of PLA stuck in it, which must have happened while removing the previous filament.

For me I was lucky enough that it fell out when I removed the filament.

[BasHamer 2]

same happened for me, pulled out the orange and some black scrap came out with it