Hi, I looked up the actual 80/20 brand spec in my catalog at work--.012"/ft straightness. Not good enough for directly mounting thk rails (without first machining flat) if you ask me. Regarding the steel tube finishing, I recently was quoted $130 to machine rail mounting surfaces on two sides of a 40" X40" weldment made of 4x6 structural steel square tubing. Quote seemed a bit cheap given the amount of work involved, but I do quite a bit of other work with this shop....
Your machine sounds really interesting. What size rails do you plan to use?
mitchell |