Big roughs on top layer
My name is Manlio, I'm writing from Italy and....I'm sorry for my bad english.
I have a Colido DIY 3D printer (Hobbyking) and use Repetier Host.
In many cases have encountered this big problem: while printing the last top layer, the printer generates big roughs on the surface, how You can see in the attached image.
I've tried to print the same object with simplify3D and...no roughs!!!
Can you help me?
Thank you so much