Copper copper

Copper with a copper interior is used when we have to work with transparent colored or opalescent glass or when we use a copper patina on the external tin.

Copper and Black

Copper with a black interior is used when we have to work with transparent colored glass and we use a black patina on the external tin.

Copper – Silver

Copper with silver inside is used when we have to work with mirrors or mirrored glass.