Well, it is more or less a finished project; just need to work on the mounting to the wooden stand I am making for my anvil, tongs and tooling. The vise is fabricated from 4" channel; the jaws are 8", the screw and box were machined with square threads 4 tpi, the spring is from an old leaf spring annealed, forged, hardened and brought down to spring temper. I have a roller bearing between the head of the screw and the face of the moving jaw. The vise appears to work just fine, but just getting started with it. I owe a lot of thanks to my mentor Steve for helping me get through this and especially the patience shown in trying to create threaded screws and threaded box the old timey way (which did not really work out for me). In the end, it would have been cheaper and far faster to get a real post vise at a meeting but then, I would not have learned as much :)