Step 1Place a drawing pin (point up) in the center of a coin.
Push a piece of adhesif tape of about 5 cm through the pin.
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Step 2Turn the COIN over and pass the tape on another pin placed about 1mm from the centre of the coin.
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Step 3Surround the coin with another tape, perpendicular to the first on, fixing it on the two pins.
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Step 4Cut about 1cm of a pencil.
To do so, gradually cut the wood until it breaks effortlessly.
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Step 5Push the wooden part of the pencil (not the lead) on the top pin (the one slightly off-centre)
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Step 6Check that the bottom pin is right in the center of the coin.
Check that the pencil perfectly centered and perpendicular to the coin.
Now just spin it !
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