The Prusa i3 MK3 seems to have an extrusion issue. When my Prusa i3 mk3 was brand new it gave out some great prints with excellent surface quality, but in the last few months that quality has dramatically decreased and now it looks terrible as a result of what looks like extrusion inconsistencies. The amount of plastic coming out of the hot end onto the bed seems to change over time when it should be consistent.

I should have mentioned Linear Advance. I think this might actually be causing the issue. This is a software feature that modifies the extrusion over time to coincide with acceleration and deceleration of the print head and provide a more consistent line. Could a bug in this part of the software give the results we are seeing?

GitHub Discussion: *Apologies, Github is not the place for this discussion*