I used 200oz/in, that was plenty of power, the spindle motor would stall before the steppers.
How precise would the part need to be? I would turn the "rib" end first and drill the hole. Then turn it over and use some small pieces of brass or similar to protect it from the jaws. Turn the flange in the first setup, this way you only have to face it in the second setup and it wont matter if it runs true |