Рет қаралды 464
I set out to refine some 9 carat costume jewelry to a higher carat yield by melting and cupelling with lead rather than acids . Now because 9 carat is only about a 3rd of 24 carat then my initial weight should drop by about two thirds so after a few hickups with my Table top kiln i had to finish the job manually with Map gas , but still got a result i was happy with .