By way of using Design Tables, I was able to create many different sizes of my company's product(s) on one file. One problem I have encountered is how to get from the casting to the finishing for each individual size. It would be somewhere similar to my diagram below.

Top level configuration(Part name)

-10" cast

--10" machined

-12" cast

--12" machined

-14" cast

--14" machined

etc...

I am able to make a design table for my cast parts, but how would I be able to make a sub-configuration for each configuration using the excel design table.