Is there any particular benefit to rotating the cylinder instead of the screw? Maybe the cylinder is easier to rotate since it's on the exterior or something?,(reply>), ​@ItsLeRez Well.. the physics is exactly the same whether you rotate the cylinder or the screw. So I don't think there's a big difference regarding "full flow". The only difference I can think of is the way that the motor connects to the rotating part.,(reply>), Old guy said why