New Table Build, 12x6 work area, drawings up any advice?

[silverdrgn]

Thanks for the response! I will be using profiled rails for linear motion. I have not yet decided on which motors to go with but I'm looking into DMM tech and a company called Teknic because they have a good warranty. I do plan to add supports to the gantry. I will also be welding it together. The routing work the table will do is light so that's why I chose aluminum. I could go with steel if it's better overall. I wanted to ask the community here for guidance on that note. I'm having some questions on how successful other folks have been mounting the profiled rails to cold rolled steel tubing? Is accuracy somehow lost without a face operation on the rail side of the tubing? For motion on X axis I have some angled rack and pinion but can go with 32mm balls crew which do you guys feel would be best since it is the longest axis? Even at 32mm I kind of feel the ball screw may not be rigid enough. Any thoughts.