It's a really good mill, it does clean it self after every job we use it for wet and Zirconia which is so its nice that we don't have to clean it our self every time. Also after its done milling it blows out air onto the puck/fixture before putting it back into the holder which is nice because you don't have to do it your self. We have not had any issues with it we use it 24hrs a day and 6days a week. Love the fact that it runs over night with no issues. Feel free to reach out if you have any questions or will like to see some pictures or videos.