Photo Credit: Courtesy of 3DStockPhoto ( image)
If I understand you correctly, compared to a Mendel RepRap you are using:
- M8 threaded rod (the same kind of rod used in the Mendel RepRap frame)
- roughly the same lengths of rod as in the Mendel, and
- cross-braced with more diagonals than the Mendel design.
So I expect less vibration and the same print quality as a Mendel.
Rather than put one block of wood at each corner with holes drilled at a bunch of weird skewed angles, the "1X2 split vertex" looks like it is a lot easier to construct.
Looks like a very educational project. Good luck.