The external appearance can be quite deceiving if there are no critical features or surfaces it won’t be finished beyond its original cast or forged finish. Th

The external appearance can be quite deceiving if there are no critical features or surfaces it won’t be finished beyond its original cast or forged finish. The inside will be precision machined to exact tolerances and the part will be validated extensively. Even with all the memes and jokes the safety considerations for commercial passenger flight are insane.