This uses the index function to cut propeller slots
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Mark, unfortunately I did not.
I wrote the code by hand with help from cncmachineguy.
The way I did it, the "C" axis rotates in degrees and the bit follows a single path. It would require significant work to adapt the postscript for XYZ +A or in my case C machining to work like this.

Bert suggested another way of doing it that could use the postscript however.
If you take the cut out area and think of it in slices rotated about the axis, and you knew the rotation, you could simply draw your cut out and then tell the bit to run that profile (on Y and Z) then rotate the part 1 degree, then run the next profile. I don't like that solution for "turning a part out" however for the prop slots, it seems like a pretty good way to go.