farrellt2

every print i attempt has these lines/ridges on the outside of them and im not sure what the problem is. ive tried two different spools of filament so that isnt the issue, and ive been preparing prints the same way i always have, the stl and the gcode files are clean, any ideas? print settings: UM2 cura 15.04 PLA normal quick print settings: 0.1 layer height 0.8 shell thickness 0.6 bottom top thickness 20% fill density 50mm/s print speed raft no support retraction on fan on