Pickled Copper Urine Cakes! - Coin Community Forum

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Author	Replies: 6 / Views: 1,484
Bond632 Valued Member Canada 98 Posts	Posted 01/02/2021 02:28 am I came across this interesting tidbit of information while reading Boultons' Soho mint notes from 1788 and thought I would share it with you all. He was describing what would be done with the copper ingots before rolling them. "The copper cakes were pickled or scoured in urine or aqua regia to remove scale" He did not state where or from what he acquired the urine from. I also recall reading somewhere about mint employees (Soho, Heaton) having to vacate the mint because of the overwhelming fumes from the acid, so I guess it would make sense to have the urine around for back up. Happy New Year everyone! Report this Post to the Staff

spru Bedrock of the Community United States 12477 Posts	Posted 01/02/2021 03:26 am I thought that's how everyone removed scale from their copper cakes. In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024 Report this Post to the Staff
oriole Pillar of the Community Canada 5238 Posts	Posted 01/02/2021 06:22 am What sort of icing goes on the cake afterwards? Report this Post to the Staff
tdziemia Pillar of the Community United States 7933 Posts	Posted 01/02/2021 08:09 am I don't think I want to know. Report this Post to the Staff
T-BOP Rest in Peace United States 18456 Posts	Posted 01/02/2021 08:25 am Well thank God they don't use what comes out the other end . Report this Post to the Staff
nss-52 Moderator United States 54280 Posts	Posted 01/02/2021 09:00 am Accordig to Google... Historically, aged or fermented urine (known as lant) was also used for gunpowder production, household cleaning, tanning of leather and dyeing of textiles. Show your financial support of the Coin Community Family (click here) See my topic on Mexican Numismatic Medals (click here) Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21786 Posts	Posted 01/02/2021 09:24 am They didn't have Coke in them thar olden times! As a kid I used to clean Aussie pennies with Coke. 2 P or not to 2 P, that is the question. They used such to make gunpowder centuries ago, so why not? @ T-BOP:- That is what they used to use for tanning leather, and is the reason why tanneries stunk so much. Report this Post to the Staff
	Replies: 6 / Views: 1,484

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