Mate at 1400x1000x1000 rails will be a substantial machine.
For instance my machine will be 500x300x350 travel. with x rails being 950, y 600, z 600.
Frame alone before epoxy is approx 600kg. Completed with stand, motors, spindle & enclosure approx 1T.
Machine can be broken down into major components so it can be moved by two people without specialized equipment.
Enclosure size will be approx 1500x1200x2100.
A Haas Mini Mill by comparison stands at over 1.5T
With regards to spindle I have only bench tested at this stage. It is an Asynchronous Servo with 2500 line encoder, it can be controlled down to any rpm in speed, torque & pwm mode.
Regards,
Michael