1. Wrap the damaged part with a heat shrink tube. Heat shrink tube with a heat gun or lighter to shrink it.
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2. Rotate slowly and heat evenly
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3. Fully contracts the heat shrink tube in about a few seconds. Note: When you shrink it with lighter or candle, please keep it away from more than 1cm, otherwise the black mark may be left on the wire.Use an eraser to erase the black mark.
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