You will need to print 8 copies of the part in order to make one complete distributor. I recommend gluing them into 2 groups of 4 and then gluing the 2 semi-circles together.
Layer Height: 0.2mm
Support: None
Build Plate Adhesion: None ( I tested with brim but trimming it off the needles was very difficult)
The author hasn't provided the model origin yet.