I have a 5 axis home build. Standard X,Y,Z with 2 rotary's that I am building a trunion for.
The center of the 5th's face, does it have to follow the 4th's centerline rotation?
How does the CAM software know the kinematics if it doesn't? Because if it's not like stated above... when the 4th rotates... the 5th's spot will change dramatically and a Z and a Y movement will have to be required for a correct cut dimension.