Well here goes... Aluminium frame router design

[CharlieRam]

Hi guys, what is your opinion about swapping the angled box section for 5mm thick steel plate, will it significantly alter the strength, have a look at what I mean below. All corner braces would be the same as the white one if it is ok.
Also I am considering having the frame bolted together rather than welding other than the flanges that are welded to the upright pillars suspending the X axis, if it is all bolted I would be able to dismantle to make any mods or changes but in your opinion would it still be rigid enough.
I've just ordered my Rage 3 saw :-) and when I get paid in 4 days the steel will be ordered but it comes in at just under £200 and if I can swap some of the box for flat I could save about £40. every little helps!
Thanks, Charlie.