I am getting some sort of peculiar banding. here is a shot of Benchy and a pi case I attempted.
This is with matterhackers PLA through a e3d v6.
The bed temp was 70 for benchy with an extruder temp of 204.
b2.jpgb1.jpg

The bed has a buildtak sheet. I am using pronterface and slicing with Slic3r 1.1.7
What should I try tweaking first...second...?
I am not sure what is going on here.

Chip