I wanted to thank you for this build thread.
I've been designing and redesigning a truss collimated 12.5" on paper for months now, and I've probably gone through some 30 iterations. I've gone from a ring mirror box, to square, to hexagonal and now back to a ring. I've gone from traditional dob bearings, to a tri-lateral design (which I thought for sure was the one), to a split-bearing design. I've gone from a traditional ground board to a ground ring with flex rocker.
Of all the unique configurations I thought for sure I was going to do, my current design (hopefully final), which is one of the most compact so far, nearly resembles Merope, just with a flex rocker. This is just another testament to how much thought you put into your scope. I tried improving on it, but their doesn't seem to be much room for improvement.
I really need to get started on my own scope and make a build thread.
I'm planning on trying truss collimation with eyebolts (poor man's method). Any advice on that front would be welcome.