OldTools Archive

Recent Bios FAQ

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'

Recent Bios FAQ