Flaps have been started, began fabricating the doubler on the inboard of the flap. Vans says this is the simplest, not necessarily the easiest control surface of the project. It was pretty straightforward but definitely involved a fair amount of head scratching to get things lined up and even trickier to figure out how to rivet them together.
I used a small 2x4 to provide some space so that I could get my hand and bucking bar into the trailing edge to rivet. Once I got the hang of it, it went pretty quickly.
When I match drilled the doubler the holes were sort of close if not in the radius which concerned me. I called vans and spoke with them and they said it won't be an issue since there is a lot holding the flap together in this spot, so no structural issue would be a problem.
I used my favorite ooops rivet for one of the plate nut holes which worked great.
The hinge was pretty simple to drill the flap side, I just lined up the center of the hinge and drilled a little further out so I could a little more “play” when it was time to drill it to the wing since I've heard some people have issues with it lining up with the aileron. This worked out great when I go to that step next.