پرسش‌های پانته آ نجفی (١)

توی ترجمه این گیر کردم منظور جمله رو میفهمم ولی نمیدونم به فارسی چجوری ترجمش کنم. خلاصه متن: She had refined her name as a gunsmith. But the years had worn some of the tread from the tires, and now she spent her days sprucing up weapons made by other people.