- Make sure your paper clips are good quality metal and are not covered with plastic or rubber.
Sand them lightly on the surfaces that contact the battery and on the surfaces that the coil
- If all else fails, make sure you have a fresh battery -- previous errors in sanding the
coils may have created a short circuit that drained your battery.
- Have someone else read the instructions without looking at your construction -- sometimes a fresh viewpoint can point out problems and misconceptions.