This is a documentary no the manufacturing of 45 fan blades for
the N.A.C.A. (forerunner to NASA) wind tunnels, circa 1941.
A lot of "the skill is in the operator, not the machine". Fifteen
minutes 'tack' time from the application of the first glue, till a six
foot stack of wood all goes in the press.
Repeat for ten more blade.
https://www.youtube.com/watch?v=v1DCjR5mjnA
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pyotr filipivich
TV NEWS: Yesterday's newspaper read to the illiterate.