"What kind of rails are you using? Are you able to cut alum plate?"

The rails are Thomson 1/2" with single and twin open pillow block bearings.

I have cut some aluminum, although that was not my primary goal.
I'm using the machine to make pickguards for my own electric guitar model at this time. I hope to use it for other repetitive routing on the body in the near future (have to model it in Rhino3D yet).