José Manuel Hermo Barreiro, known by the nickname Patelo, a retired
Spanish naval architect,
has posted a four minute, 47 second YouTube
video of the assembly and running of a miniature W32 engine model.
The project took Patelo some 2520 hours and 850 pieces were machined
by hand and assembled with 632 screws.
The video dramatically demonstrates the levels of precision achieved by
balancing pennies on the running motor which is powered by compressed
air.
Inspiring to watch, the video is here -
https://www.youtube.com/watch?v=ZVuKp5M3de8