Dry wood is one of the best electrical insulators, behind diamond and air. All of the parts for these cable lifters came from Hobby Lobby: 2" x 3" wood bases, dowel rods, thread spools, and wood glue. Sandpaper and paint are optional. Glue the dowel rods to the bases, with a nice amount of glue forming a ring or collar around the rod at the base. Let dry. Lay the spools on a table, flat end down, spaced evenly apart.