I thought about that but I do not have the room at the moment… Problems I see that are if you add the dual rod upgrade like Fernando Topete (4’x7′)did you machine will have to be like 6’x10′ to accommodate 4’x8′. Conduit does not have much strength at all and will sag under its own weight at 10′. I am interested in how much deflection his machine gets when both x and y are in the mid axis position with the dual rods. I have the parts printed and ready if I need to add the dual rods to maintain stiffness. I do not think I would be machining larger sized aluminium but for sure will be doing MDF, plywood and acrylic in 4×4.