Had lunch with a long time friend of mine that is a world known engine builder. He brought along a connecting rod and a piston to show me that had been PRINTED on a 3D printer. Both measured to within less than 0.001 inch for any dimension and was more than durable enough to test fit in an engine before having ones made from aluminum or steel. The rod even had printed 3/8-24 threads that a cap bolts screwed into with two fingers. Cost around $50 each and the machine shops love having a real 3D sample instead of blueprints. They are now developing REAL printed aluminum parts and sintered iron metal parts. Guess I just as well sell the lathe and mill.