A shot of the thrust bearing setup made from a rollerblade bearing that is held captive by a small plate. This allows for some adjustment before the screws are tightened. Thanks for the idea John Kleinbauer!
Another shot of the thrust bearing.
I still need to machine the hand wheels that will mount on the end of the lead screws.
The z-axis is going to use 1/2" CRS for ways and bronze bushings to hold the carriage assembly.
Z-axis nearing completion.
Z-axis test fit to the TK-421.