So by the time you have factored in unsupported rails, rolled ball screws, or Acme screws, off the shelf commercial extrusion, lovejaw couplings, roller skate bearings as thrusts for ballscrews you have the equivalent of a high tensile wet rice krispies box.

Good job the builders of these machines don't have access to a FEMA program so they can see where they have gone wrong. :rofl: