I am not sure about what kind of stand you are wanting, but if you know that it is somewhere on this site, it most likely is on the "
How to" forum. The search function on this forum isn't exactly anything to write home about. You might be better off using
Google.
Another possibility is that it may be an article in the
American Woodturner journal. If you are a member, you can access the online version of the journals and do a search there.
Our club has several pieces of support equipment for our video system including store bought video tripods to a home made gantry spanning the lathe for some remote controlled cameras to an operator's console where the monitoring, switching, and recording equipment are located. I think that all of the designs we used were created by club members to fit our specific requirements and has continually been modified over the years to adapt to changing requirements.
I would not recommend building a tripod, because stability and smoothness of operation are very important. By the time something could be built approaching the functionality of something already available, it is quite likely that it would wind up more expensive than buying what you need. However, there are cheap tripods and you never get more than what you paid for.
If you are interested in a gantry for fixed cameras, I could take some pictures of our at the next meeting, but I doubt that any real plans exist. The one that our club made is pretty, but functionally is not ideal. It could be a bit better in end-to-end lateral stability and the lighting arrangement is just plain bad. I have not had much success in explaining things like light fall-off and mixed lighting to the "pooh-bahs" so we put up with hot spots and overly dark areas and not much in between. Also, if your club is still procuring equipment, I strongly recommend using an LCD display rather than a projection system. The folks in charge thought that a projected image could be made any size without worrying about brightness. Now, we have to sit in the darkness and watch a dim projected image.