I wanted more room inside the housing for the digital panel, so I cut a .500" ring today, and glued it on. It also eliminated the need for me to machine foam out to fit the two pieces together.
I showed the bezel to the casting guy today and he's up for trying an investment casting of it. His class is two sessions, so we'll make the plaster mold this Saturday. Over the next week it will air cure and then be fired in time for pouring the molten metal next Saturday.
Wait 'til you see the metal we pour...
Caveat - I hope it's a successful casting...