I have PowerSpec Ultra 3D (Flashforge Dreamer clone), Simplify3D, and PETG filament. There is bubbling on top of projects. The problem is worst on projects having large top surfaces. The extruder temperature is 240 degrees C. This forum doesn't allow me to insert screenshots. How can I fix the problem?
[IMG]http://i612.photobucket.com/albums/t...psh1ypaprq.jpg[/IMG]