Nelspot ball stop
I am interested in getting a ball stop machined for my Nelspot (2nd generation, no screw to act as a ball stop). It would have to fit the top tube and I would like a parabolic shape like the Automag powerfeed plug. I am thinking of a single piece of delrin, several inches long, maybe with an o-ring groove or two to keep things snug. I would like the front to have a rib or flange on the front so it cannot be pushed too far into the tube.
Anyone up for the task? And if so, a rough idea on cost?