There is no doubt that support in 3D printer model will influence the detail of the surface and we need tool to polish it(sandpaper, knife,Water outlet pliers, file ,etc)  This model can make sure which angle need to support, and the right picture show the test result of the machine performance in support. If the degree bigger than 45, we'd better add support. Of course different machine has different parameter ,the above just for reference.You can try different parameters for model making, but remind that no any support for this model

reference detail link in NexMaker.com.You can find more from ProFabX.com