Stell frame cnc 1500X1000. Adjustable table your opinion please

[ba99297]

So far thanks everybody for your answers
Your advices keep me away from mistakes that i think could cost me money time and poor final result
After all these answers, i decide

to use part of Silyavskis' table plan ( for part of the table that the X rails rest on) .
Not to use the I beams
Not to use adjustable beams for the X axis rails and go on with the epoxy solution.
This choice means that the table is solid as rock. So before i go on with the 3d design i want your advice about the table diagonal reinforcing.
Here are some autocad plans. They represent side view of X axis. I design 4 solutions ( A,B,C,D )
The upper yellow line represents profiled rails, and the green color is adjustable legs
Tell me your opinion.
I haven’t decide yet if i will go with 80X80 or 100X100 box section. It depends from the cost. The following plans are made with 80X80 box section
Thanks for your time

[EddyCurrent]

I like B but not everyone will