A couple of the first prototypes we printed with our original 3D printer back

A couple of the first prototypes we printed with our original 3D printer back in November of 2011 #throwbackthursday #morrisontech

What material is the silver object? In fact, what is the silver object?

Silver object is a engine block. it was made with our first 3d printer which uses a powder, ZCORP Zprinter 350. It was then painted silver.