Well still building the frame but also learning as I go about the electronics and everything else.

I am looking at the pulley's to use dean said that a 2:1 gearing ratio is good for a 1605 Ballscrew but does it matter how many teeth are on the pulley as long as it is 2:1 on the otherside of the motor I can't find any threads that show how to work it out.

I am looking at using Nema23 4nm from CNC4You which look to be low inductance and high torque also nothing really shows the torque curves to show if it is usable power through the range.

Has anyone used these motors at all ?

I know that it is best to wait for buying things but my year end accounts are up so trying to make sure I can buy the bits before then.
I have now ordered the 4 Leadshine AM882s because I will be using duel screws on the X.

I'm now ordering the Hiwin rails from Fred because its taking forever to build if I use the supported rails I don't think it would ever get upgraded so do it one do it right.

So its back to cad and make the changes.