You could always do something like this :)

Paul, The problem with that drawing is that
too many people are mechanically ignorant and
to them that drawing LOOKS feasible! Bill Jepson

That's why we call it Vance's Folly :) It only took me five
years to make an unadulterated and unequivocal rotor head 
out of my good friend Vance :) I may still not be completely 
there yet :)

Paul Lamar
 
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