The Mazak V20E Machining  Centre can be seen here final boring the tube holes in a copper firebox front plate for a  Steam locomotive. 

The copper plate billet measured 1800 x 1500 x 25 mm and was first machined to thickness leaving an up stand area into which the tube and stay holes are machined. The shape required for the up stand had to be given a three dimensional transformation. This was achieved by using Mazak's 3D SOFTWARE. 

 Back Machining

R H G Stone Engineering 
Revised: December 31, 2004