Following are a number of back-translations as well as a sample translation for translators of Proverbs 25:4:

• Kupsabiny: “Silver is purified so that the maker/craftsman (can) produce a good thing.” (Source: Kupsabiny Back Translation)
• Newari: “Purify the silver,
  then after that,
  you can make something valuable from it.” (Source: Newari Back Translation)
• Hiligaynon: “(It) should be-taken-out first the things-that-are-mixed-in the silver before this will- be-formed/shaped by the silversmith.” (Source: Hiligaynon Back Translation)
• Kankanaey: “It-is-necessary that gold and silver be-cleaned to-be-made-into valuable things.” (Source: Kankanaey Back Translation)
• English: “If workers burn out the impure bits that are in silver,
  a man who makes things from silver can make something beautiful from the silver.” (Source: Translation for Translators)