Oh dear, as bad as that eh?
When you etch a pcb, how do you get the copper back out of the ferric
chloride?
Brian

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"whisky-dave" wrote in message
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On Friday, 17 January 2020 02:47:30 UTC, Bill Wright wrote:
I was trying to think of all the sacrificial things. Sacrificial anodes
on ships, yes. But... how about the face of a wooden mallet? Because the
reason it's wood is because steel would be too hard. Because the wood is
softer it's more likely to get damaged. Stretching a point? A wooden
gramophone needle, which wears out quickly but doesn't damage the
shellac? Can anyone think of sacrificial things?

Bill

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And accrding to Brian Cox last night perhaps even the universe.