here are the two center elements before the investment stage.
One thing that you may notice that's different is the light
blue part......this part of the pattern is cut out of 1/2"
foam board. The kind of insulating foam board that you can
get at most large builders supply outlets (i.e. Home Depot)
We were having such good luck with the lost wax process, we
thought that we'd let the process evolve some more. This foam
approach was going to come in handy a little later. Actually
on the very next job.