Here the instructions on how to make a cadeus coil.
Take one 21awg wire then cut it at 18 to 12 foot depending on the room inside your device , then hook on end the
loopy end side to anything that could hold it , then attacht eh free end to your drill then start twisting , it should shrink
down to 10 to 6 long , be carefull because once twisted it will want to entertwine on itself , then just roll in inside your
device like the picture below , for sure hot glue always help and you must be patient because you might not succeed into winding
it on your first try . good luck
the lenght may vary on the room you have inside |

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your device |
should look somewhat like that |

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