Belts and pullys

[D-man]

Hey guys, im in the process of designing my first CNC Plasma/Router and need some help.

I started building one thinking.... This will be easy!. and oh boy was it ever so opposite!

Anyway Im looking at building a 50x50 Plasma/router table and could do with some help along the way.

My first question is,
I want to use a belt system for control what do i start looking for and do i really need the small pulley up to the big pully (Sorry forgot what its called)

Secondly do you know where i can buy loose end belts?

Thirdly, does it have to have a certain ammount of teeth on the pulley?

If i plan to go for the pulley then i will have 4000mm worth of ball screws available for sale at some good prices along with ballnuts :naughty:

Any help would be great thanks

List of hardware i have..

2 x Nema 23
1 x Nema 34
1 x 1500mm 20mm ballscrew with 20mm pitch
1 x 1500mm 20mm ballscrew with 20mm pitch
1 x nema 34 mount with bearings
2 x nema 23 mounts and bearings
4 x Supported round rail and bearings
2 x unsupported round rail and bearings
1 x Uniport
2 x PS407 power supplies
3 x PM542 microstepping drivers