Just looking for advice on this situation. I have an Ibanez that has a low-quality barrel jack and I want to replace the barrel jack with an electrosocket jack mount and standard output jack. I do not own a vice, but I do own an electric drill. I am unsure if I should just use a 7/8 drill bit like this to enlarge the hole, Or if i should find a dowel to plug the 1/2 inch hole and then use a 7/8 inch forstner bit to drill the hole. This is a $100 backup bass, not a Sadowsky or anything, so I don't mind being a bit rough with this process. Do I absolutely need a vice for this?