It took a few days to get the Sherline motor to spin when the spindle was turned on. It turns out that the motors that Sherline uses require wider wavelengths than normal. Art had to create a special driver for me. He could not simply modify the existing driver.
"The problem is many are using peter homans speed control and such for spindles. So I cant make the spindle pulses wider by default."
My motor which caused the problems was as follows:
Stepper motors: http://www.sherline.com/cncstepper.htm
P/N 67127 (with plug) or 67130 (wires only, no plug)
Manufacturer/Model/Type: NMB (Minebea Co. Ltd)/Astrosyn Stepper/23KM-K035-62V (dual shaft)
Frame size: NEMA 23
Step angle: 1.8 degrees (200 steps/rev)
Voltage: 3.2 volt
Current: 2 amp
Holding torque: 9.7 kg-cm (135 oz-in)
Number of leads: 6 (plug wired for uni-polar operation)