For the front plastic parts i have come to the conclusion that sand blasting provides a better light for the front sections as it lights up the whole area and provides a greater contrast against the foam. This is an image of how it looks with out light, lit section pictures will follow.
It is an easy machine to use with simple instructions, Fong the Sculpture technician give me a quick induction. First turn switch at the isolator, then power box, turn the valve for the air flow. Then open the door and place your piece in the sand blaster and fasten the door closed. You then place your hands in the gloves and take a hold of your work piece and apply the sand by putting pressure on the foot pedal.
Finished result mounted in the foam.