I’m stumped by strange Cura behavior. I downloaded a model from Thigiverse for a dual-pinwheel model (I’m trying to scare birds away from the boat). The first pinwheel printed flawlessly (pinwheel B), however when I tried to print the second, it had gaps in the outer edge. At first I thought it was a speed issue (just 50mm/s) so I slowed it down. However the results were the same.
Now it is clear Cura is treating the two pinwheels differently. They are designed to spin in opposite directions, so although they look the same, they are not.
Before slicing they look the same, but after slicing the gabs are clear. These two screen shots show that while they appear as complete models, the layers on the outside edge of pinwheel A are missing.
Anyone know what’ I’m missing?