Steppers for Converting Sieg X2 to CNC?

[irving2008]

6 wire explains why they'll be so poor. Designed for unipolar drivers. Yes you can run them on a bipolar driver by not using the centre connection but that's essentially bipolar serial which is the highest inductance, lowest performance.

The other point to note is those drivers will have to be set to 1.8A as the next setting is 2.5A and the steppers are rated at 2.1A. You might get away with the higher setting but they will get very hot. At 1.8A setting you've lost 15% of the little torque you had.

But give it a go, you can always replace them with proper steppers later. :)