Using two motors for the y axis.

[Mjolinor]

Would just a stepper motor Y cable work if it comes off the ramps? from the 4 pins Y axis output?

That depends on your motors and the currents / voltages of your drivers. It is never a good idea to use steppers like that as they have no feedback so if one motor misses a step they will forever be wrong until you intervene and align them again. The same is true for double drivers though.

The only way to align them is to have one end where you know they will both stall in the same position and drive against it with more pulses than are needed. Once that is done then when reversed they will be aligned correctly.

Not worth the hastle really, get a bigger stepper and a long rod.

[DBFIU]

That depends on your motors and the currents / voltages of your drivers. It is never a good idea to use steppers like that as they have no feedback so if one motor misses a step they will forever be wrong until you intervene and align them again. The same is true for double drivers though.

The only way to align them is to have one end where you know they will both stall in the same position and drive against it with more pulses than are needed. Once that is done then when reversed they will be aligned correctly.

Not worth the hastle really, get a bigger stepper and a long rod.

I am ok with that, what stepper would you suggest? NEMA 23? I am only familiar with NEMA 17. Would the DRV8825 stepper driver be able to handle the current of a NEMA 23? How about the ramps?

I dont intend to go crazy, just one size up motor would be nice. I would really like to use a NEMA 23, ramps, standard DVR drivers and call it a day. Is this unreasonable?