Rich,

Welcome to the forum.

I too looked for a set of plans for a similar machine and came up with a blank. So I decided to build a small 250 x 250 machine using MDF to my own design for PCB milling and as a learning solution. I am working on a bigger design for machining ali, but I am still debating using aluminium extrusions or a welded steel frame.

I, as would many on this forum, would be interested in your thoughts, as a Mech E/D, on, and tools for, how to do structural analysis to avoid wasted build effort.

Irving...