Nice looking design. One question is are you planning on indexing your plates and rails? Not only to make assembly and truing of the machine much easier but also to allow for maintenance and any type of take down that might need to happen during the life of the machine. Outside of that, looking really nice and best of luck with the build. Jazz is quiet correct in that IF you can afford digital drivers go with them; I upgraded to AM882's and the difference is night and day. I have had my machine up to 11.5m/min acceleration with 2.25m/sec^2 acceleration and not have it stall (It is a bit scary seeing that speed on my machine). My normal setting is 6.5m/min V and 1.5m/sec A and I have nice smooth movement. I have done basic tuning on the drivers and have the dampening tuned to mid zone.

Michael