Hi,
Thank you in advance for reading this :-)
I've bought the Ultimaker 2 two months ago, and learned a lot about it :-)
But there is still two problems:
1. When I try to print flat surface, there is always some lumpy parts, as below:
and below (left)
[/img]
2. At the END of printing, it cannot finish extruding immediately, so the remaining filament drops on the surface of my sample, as below (right)
[/img]
So could someone provide some suggestion about that? Thank you very very much!