This is a remix of an original design created by "Verbs" that is posted at:
https://www.printables.com/model/59157-starlink-dish-cable-grommet
The original designer deserves all the credit for this very functional item - the only modifications that I've made were to increase the radius of the circular face to make it easier to get more silicon sealant around and behind it for sealing it to the outside of the house.
The item requires no supports and should be printed with flexible filament like TPU-95. This allows it to flex enough to fit around the cable before being fitted into the hole through the wall. It will fit into a 3/4" to 13/16" hole to allow the cable to cleanly pass through an outer wall of a building. It should be sealed using an outdoor-compatible silicon sealant to prevent moisture from getting in around it. I've had one installed for 2+ years with no problems.
The author remixed this model.
The original designer deserves all the credit for this very functional item - the only modifications that I've made were to increase the radius of the circular face to make it easier to get more silicon sealant around and behind it for sealing it to the outside of the house.