Maybe someone out there has had experience trying this already but I am currently pondering what is the best way to run 2 x 16mm ballscrews to move my flying gantry on my machine, still at the design stage so any modifications needed would be much easier at this stage.

What would work best out of the 3 configurations below and what would not work and why...!

Option 1 - 2 x 23 Steppers running each screw independently off of the same driver card

Option 2 - 2 x 23 Steppers running each screw as above but also a toothed belt linking the two together to prevent misalignment

Option 3 - 1 x 23 Stepper (or maybe larger) running on one screw with the two screws linked with a belt.

If linking them with a belt then how do you go about getting the right length belt or do I adjust my design to suit a standard belt??