I would like to contribute to the design for some of the larger format CNC Routers out there. My plan is to build a minimum 2ft x 4ft router and be able to index sheets across the 4ft x axis. I have seen multiple builds bolting together 20x80 extrusion but thought this may be of value to some. My Idea is to have a vertical 20x80 and then horizontal 20x60 extrusions on the top and bottom. I would drill and counter bore the 20x60 in the center slot, flat position and then run M5 cap screws to...
"I" Beam Profile
"I" Beam Profile