Uncomfortable sound during printing. What is this?
What I think I hear in the last few seconds is clicking coming from the extruder.
Have a look here: https://www.help.prusa3d.com/en/article/extruder-noises_2013/
Do you have a MK3 with MMU? It doesn't look like you have. This part of the forum is for the MMU.
Try the steps in the links I posted.
If it doesn't maybe you should repost here: https://forum.prusaprinters.org/forum/english-forum-original-prusa-i3-mk3s-mk3/
I think you will get help there quicker.
Thanks .. I have a look.
I don't see a chimney on that extruder, I'm guessing this is an MK3S without the MMU