Ffeeza ali mu by’okwewunda ebya ffeeza bw’akendeera, obugumu bwabwo bweyongera, ekisobozesa okukozesebwa mu dizayini, emisono, n’ebifo eby’enjawulo. Wadde ng’amajolobero ga ffeeza gawa langi ennungi ate nga ga bbeeyi ensaamusaamu, kikulu okumanya nti ekiseera bwe kigenda kiyitawo, ebitundu by’amajolobero ga ffeeza biyinza okufuuka ebiddugavu. Kino kiri bwe kityo kubanga ffeeza akwatagana ne salufa mu mpewo, n’akola salufayidi ya ffeeza omuddugavu, ekikosa endabika ye. Bw’eba efuuse oxidized n’eddugala, naaba n’eddagala erirongoosa erya ffeeza oba siimuule n’olugoye olwa ffeeza olusiimuula. Ekirala, kozesa bbulawuzi egonvu-erina enviiri ezinnyikiddwa mu ddagala ly’amannyo era osiimuule n’olugoye lwa ppamba.
1. Singa eby’okwewunda ebya ffeeza sterling toyambala bbanga ddene, bisiimuule n’olugoye olugonvu okutangira entuuyo n’okukulukuta. Kiteeke mu nsawo oba mu bbokisi essiddwako ssimu okusobola okugyawula okuva mu mpewo n’okuziyiza okufuuka omukka, okufuuka ekya kyenvu oba okuddugala.
2. Weewale okwambala eby’okwewunda ebya ffeeza ow’ekika kya sterling nga onnyika mu nzizi ez’amazzi agookya oba ku bbiici. Ekirala, weewale okukwatagana n’ebizigo by’eddagala, kuba bino bisobola okuleetawo eddagala eriyinza okuddugala eby’okwewunda byo ebya ffeeza.
3. Osobola okukozesa olugoye olwa ffeeza olusiimuula okuyonja ebifo ebiseeneekerevu, ebiyooleddwa oba ebitali bituufu ku by’okwewunda ebya ffeeza. Kozesa bbulawuzi y’amannyo ennyogovu-ey’ebyoya n’akawoowo k’amannyo akatono okusiimuula mpola. Leka ekifuba kituule ku by’okwewunda ebya ffeeza okumala eddakiika nga emu, olwo onaabe n’amazzi amayonjo. Oluvannyuma lw’okukala n’olugoye olugonvu, lulina okumasamasa ng’olupya.
4. Weewale okukozesa ekyuma ekiyonja ffeeza ku by’okwewunda ebya ffeeza, kuba kijja kukulukuta kungulu. Wadde nga ejja kuzzaawo mangu okumasamasa, naye era ejja kuddamu okufuuka eya kyenvu n’eddugala mangu. Ekirala, buli lw’okozesa ekyuma ekiyonja ffeeza kyongera okusaanyawo eby’okwewunda ebya ffeeza. Ku lw’obulungi bwa ffeeza wo gw’oyagala ennyo, kirungi okwegendereza olugoye lwo olwa ffeeza olusiimuula.
5. Ffeeza eya bulijjo-kwe kugamba, ffeeza atalina platinum kwonna-atera okufuuka oxidizing okutuuka ku muddugavu oba enzirugavu. Okunnyika eby’okwewunda ebya ffeeza mu vinegar omweru okumala essaawa nga 48 kiyinza bulungi okuggyawo oluwuzi lwa oxide omuddugavu omutangaavu. Okunaaba n’amazzi amayonjo n’okusiimuula eby’okwewunda ebya ffeeza n’eddagala ly’amannyo okuggyawo ddala oluwuzi lwa black oxide.
