Im sure as everything the cost will go down, the question is can the US makers get the cost affordable before our comptishion.

Im hopeing in 10 years someone will be just printing out composit turbine rc jets for us with very nice detals, lighter than current methouds, and stronger than current materals.

But time will tell I guess.

But I see the biggest issue holding progress back is copywrite protection.

I used to for a very big speed shop in Houston, and had guy who did the port work on our Modern Hemi motors 5.7/6.1, He would do it all by hand, but as our company grew he got a nice 5 axi cnc, he made a program to get the heads very close to the way he like so all he had to do was smooth it all out. Later that year, our biggest comptishion got a hold of our product made a copy of the head ports, they sold there product way under ours as there was not time invested, just plane old copying someones work.