3D printer z axis motors not responsive to full current

Grumpy_Mike:

MarkT:
I think you would put the two motors' windings in series so each gets full current?

When I made my Prussa the motor windings were put in parallel.

I suppose it depends which axis has to move fastest, but I'd have though
Z-axis is slow and needs more torque so windings in series for constant-current
drive, parallel for constant-voltage drive, so as not to perform worse than
the other axes for torque?