Why would Composites be used for machines?
Machines are dynamic structures with vibration from moving parts, milling teeth and motors. The resulting harmonics of the tool are the limiting factor in the performance and productivity of most machines.
Mass, Damping and Stiffness of the elements of a machine dictate its performance. See how composites can be better at all three.
These are a few considerations highlighted to help the when looking at the design of a part from first principles in Carbon.
Carbon fibre is an expensive material, but there are many situations where it is far more cost effective to use.