Well. After putting things off because of work and a possible out of state move, I am back on my project. With a slight change though, I never did order the steel, as home projects took priority. Plus I have spent the majority of my time on the road this year, travelling for work. While at my local plant the other day, I stumbled upon an old machine frame that has been tagged to be cut up & sold for scrap. There is a good chance I will get it. It is a bit overkill, but would be free. Built from 5" square, 1/4" wall steel tubing. The dimensions are as follows, 62" x 82" x 24" tall. Plenty big for a 4 x 4 machine. With the savings from not buying materials to build a frame with, I will probably purchase some 25mm profile rail from Automation Overstock, along with the helical R&P. Should be a much better machine. Included is a photo of the frame I described.