Was wondering what Cnc setups would work and if anyone had experience with one? Mainly to rough out risers

They work. Widows Blacktail and Rose Oak. Programming prolly the big thing.

It save a lot of wood rasping. Even looked at copy carving machines

 I believe the trick is in programing the cutters to climb cut certain areas where cross grain tear out occurs.  I have no experience doing it with a CNC, but have enough mill work experience using various cutters to know there is always issues with tear out to deal with. I'd advise practicing on inexpensive material before blowing out expensive hardwood.  .02 cents worth...