there is a cool video in the hackaday link below http://hackaday.com/2015/10/19/repairing-55000-of-vintage-core-memory/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29&utm_content=FeedBurner+user+view
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