This video is the prequel to "How To Magnetise a Screwdriver". In this video, I show you how to recover the magnets from old speakers and computer hard drives.

This video is part of this playlist: [ Ссылка ]

Thank you to Carolyn, who provided the old speakers. Thank you to Adrian, who provided the old computer. Thank you to Noel who took part in the filming.

Paul in Perth.

TAGS: magnetise magnetize magnet speakers junk HDD super-magnet neodymium dysprosium

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