I bought a Shapeoko desktop, 3-axis CNC Machine kit and it's working fine except for the work surface. This Cartesian Style CNC is what I was looking for. However, I will have the 2 Z beam support outside of the rails to gain on the work surface.
DM C-Beam XXL Tank
Build in 'Cartesian Style CNC' published by dmasters, Jan 20, 2018.
1000mm x 1000mm C-Beam XXL CNC with external drivers and high torque Nema 23 motors, 2.2KW Spindle with VFD.