Build-A-Jib 101. Please. Love your work, but all of this should be posted there. Reason is so others will have the resource and not have to search SG for this later, unless you plan to baby sit this thread and keep bumping it for the next few years.
I would PM a Mod and have them move this thread to BAJ. This is great stuff for anyone trying to weld up metal rails. Seriously, the pics are great and you could add a "how to" post in it that does step by step.