hi gr5, Thank you very much for your response. This helps a lot, especially for me as a beginner.
I will make a new part with a smaller angle, maybe 30°.
I will try to print it the same part again with some "fake" parts beside the main part. It sounds strange but i think it is a good idea👍
I choose the size beacause i wanted to try diffrent settings and learn to work with cura an the ultimaker, without printing too many meters of filament🙂
Normaly we do not have small spherical parts like my test part.