Quote Originally Posted by 3dkarma View Post
PLA needs cool, not warm. Remove the fleece and make sure you have a fan blowing on the heat sink above the hot end.
The tiny fan I do not believe can be turned off. It comes on the moment the printer is powered up and doesn't shut off. The larger one that has the duct that blows on the extruded plastic is controlled by gcode or on the control panel. Is there an established fan use for PLA? On at what layer? On how much, I mean at what %?

For ABS I set it to off until layer 5 then 30%. This has worked well for me. Not sure if its right.