If you look at some of my shaft placement sketches, they do result in a full use of the rods and a part that can be lifted out of the printer.
If you drop the arm junctions on center, the hot end and mount structure comes up further into the "empty space" at the top. That's not to say you *should* do that. Put another way, having the arm pivot points almost hit the build plate uses up more of the space above the pivots.
If you drop the arm junctions on center, the hot end and mount structure comes up further into the "empty space" at the top. That's not to say you *should* do that. Put another way, having the arm pivot points almost hit the build plate uses up more of the space above the pivots.