Can't insert new filament after unloading the old one
Hello friends.
I've unloaded and reloaded filament without issues for some time, but today I couldn't push the new filament, it's blocked but some mechanism inside the part of the printer which passes the half-transparent tube through itself. Here are the photos to better explain which part of the printer I mean
Do I need to disassemble this part, or there is an easier solution?
RE: Can't insert new filament after unloading the old one
Remove the filament, use side cutters to remove first centimeter of the filament in such a way that the cut will be under 45 degrees angle, so that it creates a sharp end similar how the needle is designed, and then try to push it again.
If that does not help then you need to disassemble the sensor ans see what is there https://help.prusa3d.com/guide/how-to-replace-the-side-filament-sensor-core-one_408981
See my GitHub and printables.com for some 3d stuff that you may like.
RE: Can't insert new filament after unloading the old one
Yes, the new filament sensor has a design flaw (compared to the previous iteration) where on occasion the tip of the filament can get caught on a lip before it makes it into the second (and main) Bowden tube. As @_KaszpiR_ points out, cut the filament at an angle. There are various remixes that smooth out that section on Printables.