Several years ago my sons built a free standing vice out of an old machine stand, a plate that had been used in a hitch for a tractor i'd restored for a friend and a cheap Harbor Freight vice. I wonderd how useful it would be, turns out it is handier than a pocket on a shirt, it makes a great third hand when working on awkward projects, it's only short coming was it was kind of tippy. I was wandering past a carcass of a DC I have and came up with an idea, use the cast front rim and hub to make a more stable stand, this is what I came up with, it seems much better planted than before but still moveable.