Hi,
Never had this problem before, even with a 1.5 and a 2mm nozzle. As a matter of fact busy testing a 2.2 and a 2.5 mm nozzle.
Anyway...
Together with a few friends busy printing parts for our Ulti-Printers(own design). Nozzle is 0.7mm encountering some oozing problems while printing rather complex shapes. Never had this before.
To begin with slicer does its job very good. Only one minor issue. Printing a part like the one in the picture it starts with that small 'island' front-left, then the nozzle runs to the opposite side and print that second 'islands' (front-right) and ends with printing the large middle part. It does it all the time, there's nothing I can do to change that sequence. Distance between these two small islands is about 11". So there's plenty of time to ooze. Retraction is set to a max. Can't go any further because otherwise the hotend starts to clog.
Good news is, the straight walls and the convex perimeters print absolutely perfect, no problems at all. But the concave sections are 'contaminated' with very small drops of oozed particles. These tiny drops stick at these 'inside curved' perimeter while running from far-left to far-right and back.
Again all outside bulges are absolutely clean, the 'inside bulges' are not.
The good news is I may have found a solution to solve this problem. Gonna test it now.
To be clear, printing 'regular parts' like cylinders and cubes there's no problem at all. Problems start when there's a inward curve involved.
