Wasn't sure who you were talking to Ed, but I think by the reference to the clamps maybe it was some of my cobbled stuff. So here's some pics of the main station I use with the grinders and drill press. Nothing earth shaking but is the pivot for the garage rumba I do every day.
Thinking back I think the mystery rail came with the new dishwasher, but damned if I know how they were supposed to work so they went into the re purpose bin. Works great for hanging the grinder and vises.