I have a friend who makes wooden barrels for vine and whiskey. Someone wanted furniture from barrel. He needed to cut barrel in two pieces but radially. I got idea same second he asked. I put small circular saw on lathe in workshop of our other friend, just to do 30 barrels. It works perfectly. Then we tried piece of wood and saw is doing great job because you can turn wood very slowly saw has speed, much better than a knife. It seems that I will put electronics and steppers on two axis on lathe.
This is just an idea, not finished project.