I built a new vise stand last week so that I can stand up and engrave. It has a wheel to pivot the vise like a potters wheel vise eccept the wheel is just above the knee. I tried it at foot level but that required that I stand on one leg when turning it. I have enough trouble standing on two legs these days. This seems to work quite well. I walk around it until I can't go any more and then just turn the wheel with my knee to finish the rest.