Rolls-Royce’s single-crystal turbine blade casting foundry
This is the best documentary on how RR makes the jet engine and the blades. 1 hour long but once you click it, it would be hard to stop!<p><a href="https://youtu.be/VfomloUg2Gw" rel="nofollow">https://youtu.be/VfomloUg2Gw</a>