[GB SISSON]

Swap meet was a great outing, but too short. Working between first ferry off the rock and last one back, then the driving... Got a used set of 8rt pumps for ten bucks that feel tight and an oil bath with the right base for my 1 1/16th model 94 and a few other parts. Woke up early today and my brain was designing jigs and fixtures to mechanize the bowl shaping in my EAC heads. I had a good start by hand but lusted after those machined surfaces produced by Terry and Ron with their shop made cutters. My shapes were getting close, but I wanted an abrasive of some sort to grind my way evenly to that .040 .050 quench area that follows my new pistons. I figured I'd turn a wood plug with the piston crown shape. Cut slots in it for sanding belt strips and somehow introduce it into the piston dome/cumbustion chamber. But how to center it? How to hold the upside down head correctly on my drill press? Slowly it came to me. I already had the fixture I needed. With my new contour gauge I selected the perfect tool that would now hold the adhesive 'peel and stick' sandpaper strips and mimic the shape of the crown on my .125+ pistons. This became my bowl grinder. But how to hold the head perfectly centered and concentric to my new grinder? It would need to be a pretty substantial fixture to hold this spinning abrasive tool steady while pressure was applied to the cast iron bowl. ... To be continued