OldTools Archive
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263930 | "Ed O'" <edo@e...> | 2017‑11‑14 | Re: Hot mic |
I have heard old machinists kept pennies in their tool chests, supposedly to prevent rust. I have heard it numerous times, and an explanation of how it would work has never been provided. All I can guess is that solid copper might change temperature faster than steel and somehow attract condensation first. I think it was 1982 that pennies ceased to be all copper. Ed O' |
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