Hi Boyan,

Thanks for your reply. What I meant by expensive for the ribs, is that it looks like a cheap CNC (for a reason I suppose). But to upscale it to the size I plan on, would turn it into a NOT cheap CNC. Also, as mentioned here, MDF is not the best option.

I plan on building mine more sturdy. Steel Square tubing etc. I would want to use it for a while you know? I also have some steppers and a spindle etc which I bought over a year ago! Closer to the time, I shall look for more inspiration here.

So to sum it up.... what would be wrong with this design for the axis like in the photo? (let's assume more sturdy and reliable materials are used)

Thanks (for everyone that gave input here!!! )