I was finally able to scrounge together an hour and a half to start designing the Z-axis carriages, I finished the Z-axis side 1 clamshell, tomorrow I will be finishing the mating half which will allow me to begin mounting the X-axis guide rods. I would like to have the X-axis guide rods mounted on both sides of the Z-axis by the middle of next week so that the design for the flip out Y-axis truss can begin. 

Here you can see the opening to access the X-axis spool for spectraline installation and adjustments. The spectraline pulley bearings are sealed and no lubrication will be required. This image is also missing the lead screw anti-backlack nut housing which will be modeled after the mating half of this clamshell is designed. 

On the back side we can see all of the mounting hardware protruding, as well as 3 alignment pins to keep both halves of the clamshell in place. The Z-axis carriage is a subassembly, exploded views will be available, I'm also planning to emboss part numbers on anything that will be injection molded (For a kickstarter) so that it is easy to assemble / reassemble. 

For anyone looking at this project that does not feel they have the technical expertise to repair their TOME. Fear not! The TOME is being designed with the end-user in mind and a user manual will be released!

Tomorrow I plan to 3D print this clamshell with the mating component, the goal is to have one side of the Z-axis operational this week!