I did the Warco Major, there's a build log somewhere.

There is no specific way to do it, you pays your money and takes your choice.

I'd strongly suggest a 2 stage operation, first cnc it crudely so you have a cnc mill to cut the parts. Then do the pukka job when you know which bits are the problem areas.

The first common mistake is to buy a ball screw the same length as the X axis and then discover that with a motor on the end you have severely limited the travel :whistling: