Give another point to ESS,

They really do help if their are issues and once fully set up it runs a dream. When tuning my motors I can get a solid .005 to .01 mm repeats (the DTI and Plunge gauge are calibrated to +/- .01) which literally puts the machine up against the ability for me to accurately measure. That is with C7 screws Zap NEMA23 "24" 3.1 NM motors. Running Mach 3. B.O.B is a PMDX-126 and the power supply is a home built toroidal transformer providing ~68V w/ 15A. It does the job. Have the spindle on the relay on board the PMDX and also a secondary relay off the PMDX so that power is cut during E-Stop.

With Geckos and the Jumbo mode on a PMDX 126 or the ribbon cables you can set up a rather power system if you have the time effort and funds.

-Michael