Goodstuff123 Posted April 6, 2018 Share Posted April 6, 2018 Hi I have a 5 gallon cooper still about 20 years old has think black coating on the inside all most like paint comes off with vinager when you scrub it this still safe to use Link to comment Share on other sites More sharing options...
SlickFloss Posted April 14, 2018 Share Posted April 14, 2018 That depends on the solder material. Use citric solution not vinegar to clean it up. Link to comment Share on other sites More sharing options...
nabtastic Posted April 19, 2018 Share Posted April 19, 2018 Use an acid to clean it - or a soak in PBW if it's really bad. Boil water through it to check for leaks/clean the nooks and crannies. Link to comment Share on other sites More sharing options...
Goodstuff123 Posted March 14, 2019 Author Share Posted March 14, 2019 Ok I clean with citric acid this is what it looks like now is it safe to use Link to comment Share on other sites More sharing options...
TexCF Posted March 20, 2019 Share Posted March 20, 2019 You should post this over on reddit.com/r/firewater if you haven't already. Link to comment Share on other sites More sharing options...
Aux Arc Posted March 20, 2019 Share Posted March 20, 2019 I'd say it safe as a planter or a conversation piece Link to comment Share on other sites More sharing options...
Hudson bay distillers Posted March 21, 2019 Share Posted March 21, 2019 if i was you i would soak it in citric acid ....very strong acid three cups per gallon till it looks shiny like copper tim Link to comment Share on other sites More sharing options...
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