Thank you very much, my problem has been resolved to a great extent. But as the last question, I see in the sample that you are printing lines that are in the final sample that I myself have printed. Is this the ultimate quality of the b9core550? I printed the rings file with Thickness of 30 and 50 , and there were two layers on it, how thick did you print the ring? Are these small lines normal or there is a way to get rid of them?