As the 'Improving' thread is getting a little long and other people seem to be making better progress...
What is causing these errors?
The top and bottom perimeters measure very close to the 30mm I've set. The infill is set to 10% but appears to be over extruding which would explain the step in the print and I can hear the nozzle dragging when it's printing.
The corner overhand and burn though??
When the 3DBenchy is printed, the layers do not adhere firmly to one another. From a height of the printed part of about 50%, the printed parts break off and the printer prints in the air. I use the CURA default settings. Even increasing the hotend temperature to 220°C does not bring any significant improvement. I use PLA. The filament prints great on the old printer. Maybe the speed of the fan needs to be changed or is there another suggestion?