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Not quite sure what's happening here. I printed it as a single ball and had this effect. I thought it might be a cooling issue so I printed 4 at once but the issue still occurred. If I size the ball up, the problem reduces.

Note that the hole is supposed to be a cylinder.

Photo of four balls exhibiting bumps around a cyclindrical through hole

1 Answer 1

It looks like it is trying to fill in what might be small gaps and is putting blobs down because the gaps to too small of a detail to accurately fill.