Topic: Print head suddenly "suddering"
I've been using an S4 for some time now, not had any issues fine tuning didn't correct. However, in the past few days, the print head "shudders" harshly on the back end of a circle print (the front end towards the front of the printer is fine, the back end towards the back of the printer generates a shudder).
This causes the print to be wavy ~ not consistent. The entire printer vibrates during the shudder effect.
Do the rails simply need to be lubricated? If so, what type of grease is suggested?
