I have been looking around for some Hiwin Profiled rail to upgrade my homebuilt CNC Plasma
I need two lengths approx. 1500mm long for the Y Axis, not sure what size I need yet....... it only has to carry the Plasma torch and Z Axis

Questions
I have seen different part numbers for the same size rail and carriage, what is the difference?
Anyone know where I can get some, cheaper the price the better!

Thanks

Andy