Once the entire model was built and I was confident that it would work, and could be built (printed) and assembled, I went ahead and printed out the parts and built a prototype. Why? Because I wanted to use a crank mechanism, that's why! This added some complications, but it also had a benefit once the geometry was determined, operational repeatability would be ensured and the min and max limits were pretty much guaranteed. The wing opening mechanism was a crank and slide mechanism.
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