Was a bit leery of attempting to make the Rudder Bellhorns from the RAF Hidden Rudder Bellhorn plans, (The only bit of paper I have from RAF, which came with a note signed by Tonya Rutan!) The difficultly being CAD plating the steel parts. I have been given a set of these FB1 parts from another builder, (thanks again Andrew Winkworth), but now note RAF just say to rattle-can some zinc chromate on them! I'll use etch prime and zinc paint.
Rough cut the FB2 from 1/8" 2024-T3 on the coping saw, (breaking two blades), rough grind/sand edges and match drill to FB1. They look lovely, I reckon I'll use them!