Fixed z axis to gantry design

[Robin Hewitt]

please stop calling it the gantry it's the base Frame and I'm easily confuddllledd. .

With both methods the rails have a length equal to the table travel plus the overall width of the bearing block assembly.

In this topsy turvey arrangement I am advocating the block assembly width is tiny in comparison, so the rails are short.

If you could bolt the "base Frame" to a workbench this could look ultra neat.