Disappointed in myself.

Well, I went home for the weekend, and accomplished near nothing over there. I spent all weekend on the project, and only came out with the adjustment nut and a rough template for the arm.

It does actually screw on. I think getting the angles and spacing right on the threads is what took me so long as with the 4 kids that are running rampant in my house...

I know I could have done much more.