Opss, ;-) I donīt think I have the skills to keep up whit you drawings.
I have a question, and please keep in mind that I donīt have any skills in CNC building.
In your top detail wouldn't it be better to use a L shaped stall bar instead of the pipe? It would be easier to fix to the chassis of the machine and I have the feeling It would be more stable. It could be fixed like < or L and a upside donw L