Hi everyone. I have built a Kossel XL printer running with E3D Lite6 and currently I have been succesfully printing for a few weeks with PLA. Today a weird problem appeared that the heat of the heater block fluctuates a little bit while printing and it acts like a sine curve (please see the attached images). It is +-3 degrees right now, till yesterday I did not have any issues like this, the tempby aburakaktas - General