Many thanks for that info again, i will most likely then go for the EM806 drivers from zapp as it does sound like a worth will benefit as the machine is so big in the x axis.

cnc4you nema 23 were as zap call them SY60STH86-3008B, will they in fact be exactly the same? i will most probably get those and the rest of the little parts from cnc4you.

Zapp mentioned that it may be worth running a nema 34 on the x axis with possibly one of there 3 to 1 gearboxes which would allow a direct drive which may simplify things but not sure if i will be able to fit it all in like that without having to mount the motor up top and still have the belt that i was originally planning.

Does any one have any experience with the quality of the zapp gearboxes for the nema 34?

Many thanks again for all the help sorry for so many questions but i just want to be double sure on every thing as it is all totally new to me and obviously a lot of money involved in it all that is extremely tight.