OK I give up and have deleted all drawings to start again, But before I start with a new drawing please can you send a quick sketch of your cnc or a picture as I did not under stand what you mean about the bottom plate as one piece that bolts to the bearing and is also the spindle mount, Remember I have no machining ability so I will be buying the aluminium cut from the supplier at 20mm thick and cut to size as I am disabled and could not hacksaw 20mm thick aluminium plate. But I do have a drill press. I Have been copying some designs but have been adding some extra bracing etc. So now I have a blank screen on my computer and before I start again it would be nice to see your CNC or where to find your build to give me some help in the design.