I have discovered that I can easily press the wire into the wax foundation by using the tip of my light duty hot glue gun. I just set the frame down over a piece of card board for support, and a sheet of foundation and I then run the perfectly heated tip of my light duty glue gun along the wire. It works great. The tip of my glue gun even has a little notch in it for the wire to sit in. Not a solution if you had to do hundreds of frames but for 10's it beats having to build one of those electrical things and works far better that the spur tool.