Metal Detector Head Mk2

Problem: I am building a PI Metal Detector with an 8 inch head ring. I want to print a ring holder but my printer will not accommodate an 8 inch ring.
So here is my second attempt at a solution, my first one being overbuilt and lavish in its use of filament.
All parts are snap to fit except the pivot. It needs larger plastic bolt to hold it to the bracket. You will also need to epoxy the ring assembly when final assembly is done.