Five years ago this thread got me interested in the Zyliss vise. I finally got around to buying one. The aluminum was heavily oxidized and there was significant rust on the rails, but it showed no signs of real use. Lots of elbow grease later and it is like new.
I also modeled and 3D printed the upper and lower soft jaws.
Then I went down a rabbit hole of looking at all sorts of Zyliss variations. Some have the quick release as mentioned in this thread. Some have horizontal slots on the jaw bases, and some have a lower slot for mounting to an optional pivot plate. The table clamps had at least three minor variations. Various sources claim the vise was developed sometime in the 50s or 60s as a portable tool for the Swiss Army. It was later mass marketed as a hobbyist vise.
And that is only is the Zyliss branded version. There are/were countless clones and/or licensees with various extra parts or features. So far I've found Grip Master, Vunder Vise, Z-Vise, Z-Vise 2, OZ Vice, Extra Pair of Hands VIce, and SwissRex. SwissRex later produced a functionally similar, but different looking version.
