If you already have a mill, especially a cnc mill, it makes matters very easy. If not, there are several methods you could use. Most rail makers have cad drawings on the websites. You can download these and print them lifesize to help with marking bolt locations. You can use the rails themselves with some transfer punches.
A perfectly flat mounting surface really makes it simple too. If not perfect, then shimming can be done. A feeler guage set or two would help here. I think if you have to shim, it's better to shim the rails rather than the trucks.
__________________
Lee |