This is dramatic and certainly renders the drive itself useless, but this is not how you securely destroy data. The bits on those platters are still largely recoverable. Do Terry a favor and run that drive over a degausser (or at least a really big magnet) before putting it in a museum. And let everyone know you did it. Remove the temptation for someone to steal it, attempt a forensic recovery, and try to sell unfinished Terry Pratchett novels that the author never intended to see the light of day.