CNC Twin Screw

Good morning,

I am going to use my new CNC milling wood and aluminum. The available area is about 1000*750, made entirely of steel, with a machined frame and reference station bridge. I am thinking of a twin screw construction (see attached photo) to equalize the thrust on the X axis and the practicality of the construction I have in mind.

There are doubts about the management of two screws and two independent motors, in fact I doubt if there could be alignment deviations and undo all the efforts made to achieve perfect orthogonality.

I am thinking of using "closed loop" stepper motors (like these: www.oyostepper.com/category-30-b0-Closed...-Stepper-Motors.html ) to avoid missing steps (even if we do not yet understand if they really work as a PID loop or just generate error signals in case of loss of synchronization).

Does anyone have experience with this and can give me some advice on the electronics to use and the associated software (I'm thinking of Mach3)?

Thanks in advance everyone

There is nothing to  worry about at all. You should read the chapter on homing configuration, On fact, after the  seventh read it might finally sink in
linuxcnc.org/docs/stable/html/config/ini-homing.html
Linuxcnc supports what we call joint axis machines where multiple motors (joints) are attached to the one axis. eg one each side of a gantry.
When the joint axis is defined (which Is super simple by adding a negative  home-sequence in your ini file), the gantry is squared on homing. The first joint to reach the home switch stops and waits for the other joint to catch up before both joints finish  of the homing sequence in unison. If your machine is not square att the home switch, it can be adjusted in software by altering the HOME_OFFSET to account for the difference,
But home switches  are mandatory to do this!