Recent power cuts

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Yes you can achieve similar results with two nails and a potato ...a seen on the net .......speaker magnets are great for this as are microwave magnets .....be very careful removing these buggers though they can hold a good thump and could well kill ....even unplugged seek help of some one qualified !

I agree with you 100%, mate. Broken electrical anything can be scavenged and repurposed for almost any use. Several years back I took an old car alternator and turned it into a mini generator for a project for a pal of mine. Got a nice bottle of plonk for my troubles too.
I use 'First4magnets.com' and I have a few. They are good value and fast delivery. This might be a safer option for anyone who is not an engineer like myself. At the moment I don't have too much broken tech about. If the grid goes down permanently ... well I have a few more fun projects to be getting on with