To show that I'm actually doing something, here is my first (interesting) CAD drawn part:
It's the lower wing attachment fitting. This is part of the reason the Ni17 had a reputation for shedding its lower wings in a dive. This part was he only attachment point to the single lower wing spar. As a result, the wing could twist under torsional loads and result in 'flutter'. I try to post the wing spar side of the attachment and later the spar attachment points. All of them are aligned along the spar axis.
Jim - I'm having trouble interpreting Rozendaal's dimensions (one is smudged). Do you have the original Ni27 drawings for this part?
Nick - if you read this, the small holes through the shaft are for tapered pins.
I might pick your brains on these if I can.