I have a part with a flange in mid-air, shaft OD55mm one end, shaft OD45mm the other end and the flange OD 90mm in mid-position. Obviously this 90mm flange starts 75mm up from the datum plate. How best to support this to avoid stringing and rough finish? Is it a case of multiple supports or within the 3D design file create sacrificial rings to cut off after printing? I'm fairly new to this and done a few R&D jobs successfully so far including mating threads. Using a Qidi I-Fast, PLA filament.