You need to decide on the stepper driver you purchase prior to building a power supply.
For maximum speed you would need a 65 volt supply due to the high inductance of that motor.
Drivers rated that high are expensive and probly not needed.
You can get reasonable drivers rated at 50 volts which will give good speeds but allways run lower than stated maximum.
If speed is not a factor you can run an even lower voltage.
You won't need many amps with this motor. A 3 amp supply would be more than enought.
Supply does not have to be regulated but it needs to supply reasonably smooth volts at the required amps.
Hope this helps
George
For maximum speed you would need a 65 volt supply due to the high inductance of that motor.
Drivers rated that high are expensive and probly not needed.
You can get reasonable drivers rated at 50 volts which will give good speeds but allways run lower than stated maximum.
If speed is not a factor you can run an even lower voltage.
You won't need many amps with this motor. A 3 amp supply would be more than enought.
Supply does not have to be regulated but it needs to supply reasonably smooth volts at the required amps.
Hope this helps
George