I apologize for the probably trivial question. I am not able to obtain a nice finished top surface on this part. For some reason the preview of simplify 3D appears as in this picture. Do you have any hint on what could be the parameter to tune in order to have a uniform surface? I tried the number of top layers and many other changes but without success. I am attaching a picture of the model in s3D and the fff file.
Thank you in advance.