Hey! 2 years ago I got a Kossel XL and it has been working fine until recently. The print quality slowly started degrading and it was being caused by extruder not extruding properly- It kept grinding and making a clunking sound.
Since then, I have been through 2 different extruder mounts, 4 different extruder drive gears, I bought some capricorn bowden tubing since it was very cheap and have tried multiple spools of filament. Nothing sorted this problem.
I am printing PLA at 215.c at 50mm/sec with my extrusion multiplier set to 100% and the Esteps/mm set correctly. I have also tried new stepper boards with the correct voltages (0.8v) and nothing has fixed the issue.
Here is a video to show what my printer is doing, if you need any more info, just ask
Does anyone have any suggestions on how to solve this problem?