Looks well thought out, following
M4: 1510SS Heavy Mk.I
Build in 'Cartesian Style CNC' published by Rob Taylor, Aug 22, 2020.
A 1500x1200mm, 20mm rail and 1610 ballscrew, heavy-duty, four-axis gantry machine. As high speed as spindle power MRR will allow for. Approx 4 x 3 x 1ft travels, intermediate size between benchtop and floor-scale units. Aiming at $10-15k machine in the $3k region.