Another first with Speedmaster heads. This one had me scratching my head

Well while I was working on getting the needed chamber clearance I came up with another simple project idea. My valve cutting tooling that holds the seat cutter cost Hundreds of dollars plus the almost 70.00 cutter. Not something I want to drag over to my dirty azz porting bench so I’m going to take one of my extra 11/32 pilots and machine a split ring collar to fit my pilot. Then I can weld something up as a go, no go gauge so I can quickly see if and when these chambers need some added clearance. Sure beats mounting and leveling it on my seat machine after you cleaned it up for its valve job. Another total loss of a day that I earned nothing so I might as well learn something. Lol