I’ve never rigged a biplane or a ship, but I think I now know what doing that is like …
After thinking a fair amount about how to make the rods that connect the wading ducts, I noticed in one of Resicast’s instruction photos that it showed a cable (whereas an official British Army drawing calls them rods), and that meant I no longer had to figure out how these rods would have connected to the release mechanism: a cable can just loop through that, with an eye and a turnbuckle on both ends that go onto hooks on the ducts.
That just left the problem of how to make this so I could attach a line to the turnbuckles and preferably have it adjustable until after everything was actually in place. The solution proved fairly simple:
I cut a bit of the turnbuckles away and glued a piece of brass tube in place, 0.5 mm outer and 0.3 mm inner diameter. That allowed me to glue 0.2 mm nylon fishing line into the tube of half the eyes, and when the glue had set, hook it up to one of the ducts, thread the line through a hole drilled left to right through the release mechanism, and thread a second eye onto the line:
All that remained was to slip that eye over the other hook, tighten the line and apply glue, then pull the line taut for a bit until the glue set. I did have to hold both the turnbuckle and the line for this, to avoid pulling it up at an angle, but all in all, it was fairly easy — aside from threading 0.2 mm nylon line through an 0.3 mm hole …
Repeat with the other two:
I’m now waiting for the glue to fully dry before cutting off the excess line, which will need sharp and precise cutters. My normal plastic cutters have trouble with nylon line this thin, but I also have some high-quality ones designed for thin copper wire that do work fine, a quick test proved.