Newbie from Manchester (currently in hospital 😢)

[etched4u]

I decided a few years ago to build a cnc machine, fixed gantry/moving bed, started off a4, resized to a3 on paper, built machine then increase size to 1200 x 450, all works well large and small, aluminium, plastic and wood, I want to improve machine x axis and make it look better than frankestiens daughter it currently is, she is made from aluminium 40x40 solid box and 60 x 10 flat bar, my first question is will aluminium extrution be as strong or should I stay with solid box/bar, could box section work instead of the sold 40 x 40.

Any help advice appriciated

No pic as I am currently typing this from my hospital bed

Steve