Do you mean you can't find the correct screwdriver bit?can't find where to get drill bit to open up,
www.toolstation.com

Is there anything 'earthed' in your bed that would result in the risk of a significant electric shock should any part of the blanket become 'live' - or is it perhaps fire (due to an L-E fault, assuming the blanket has an 'E') that you are concerned about?....wife likes the blankets, but I insist renewed every year, and all my sockets are RCD protected, other wise it would be a silent day as well as night if anything goes wrong.
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