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Non-Chemical Cleaning of Manually casted gold bar

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V

vipulac

New member
Joined
Jul 14, 2016
Messages
4
Want to know

i melt gold then i pour into mould for 100 gms bar then i deep into sulphuric acid
above is the method which i follow but the final product have some problems with surface

I attached file/photo herewith this post

please suggest me best cleaning method

thanks
 

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