Hello. Well this is my first try on homemade CNC and i try to designe it the way it will cut aluminium without problems. My main concern is that Y-axis bridge isn't strong enough, about main cage ridgity, i can add more vertical aluminium extrusions to make it more ridgit. All the additional parts are made from aluminium. So please comment/critic the design.

In the link there is the Solidworks 2010 assembly.
http://dl.dropbox.com/u/24846288/Cnc2.rar