Any help or ideas appreciated. I seem to get ridges on circles being printed in the XY plane. I do not know whether this is with the software I am using Designspark->Slic3r->Pronteface or whether it is a motor speed setting e.t.c. Any help would be appreciated.
A better picture would be good. But from what I can see it is a jerk problem. The printer is essentially stopping at every little direction change causing slight over extrusion and there for a blob. Try increasing the jerk setting in firmware.
