Ball screws have now arrived along with the linear rails, just need to get them home in one piece !

I have also been doing some research on stepper drivers and I am still unsure what to do, my ball screws have a pitch of 5mm and will be direct drive from the stepper motors so does that mean that I will have to have high voltage drivers to produce the speed required for a decent feed rate?

I have found these on eBay and was wondering what anyone else thinks about them compared to the high voltage kit supplied by zapp
CNC Wantai Digital Control 4Axis Stepper Driver,24-80VDC/7.8A www.wantmotor.com | eBay

Also any thoughts any one has on the machine design would be greatly appreciated

Joe