Forecast 3D showed off a replica it built of the classic Chevy Corvette LS7 small-block engine using rapid prototyping. Engineers used fused deposition modeling to print the intake manifold from an Ultem 9085 thermoplastic. They made the engine block in a two-step process -- employing stereolithography to build a master and then encapsulating it in silicone to create a mold. The company has used the mold to create 25 urethane castings of the block. The block replica is so detailed that it has real pistons, and oil can run through it.
(Source: Design News)