Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Copper in a dream is wealth from non-Arabs. Utensils made of it indicate a loyal servant. Whoever sees himself melting copper is disputing over a false matter.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Copper indicates bad speech and gossip. Working with it indicates falling into a disliked matter.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Copper is interpreted as unlawful money. Whoever sees himself selling it is getting rid of a worry.