Hmm. add a small battery powered motor and gear reduction, say from a RC car or the like and that wouldn't be to bad. I have been drawing something like that that I wanted to build but with flat jaws similar to the Goons posts to hold multi cores flat. put a decent spring between the vertical plate and one of the drive gears so that it puts tension on the core wires and doesn't allow them to sag. Could be a decent addition to my toys.