Quote Originally Posted by Clive S View Post
Dean (Jazzcnc) usually uses one motor but I think on the machine he is now using it has two.
I use two motors and I am happy with it.
Yes it has but only because I inerited the machine it probably wouldn't if I built it my self.! . . . Thou It's just on the edge of too big for belts so maybe not.?

On large machines 2 motors make more sense because the belts get messy and custom lengths. At this size and with this design then I'd 100% be using belts.
It's only slightly cheaper in cost but much more reliable and stable in use. Can make full use of the machines potential and not worry about screws running out of sync with each other.

If using 2 motors then the ONLY way I'll use them is if the drives have Stall detect with fault output to E-stop the machine ie: EM806 or AM882 . Also external motion control card is prefered due to higher work load. (Personaly I won't use the Parallel port on any machine)