Hanyar Maganin Fuskar Sama
Rufin foda wani nau'in rufi ne da ake amfani da shi azaman foda mai busasshe, wanda ke gudana kyauta, wanda sannan ake dumama shi don samar da fata. A lokaci guda, fesa murfin foda a saman aikin kuma a gasa shi a yanayin zafi mai yawa, fim ɗin kariya da aka yi a saman yana da daidaito kuma santsi.
Galvanization magani ne na kariya ga ƙarfe, inda aka shafa wani abu na ƙarfe ko ƙarfe da wani Layer na ƙarfe na zinc, wanda ke aiki a matsayin shinge don kare ƙarfen da ke ƙarƙashinsa. Sannan ana barin zinc ɗin ya manne sosai, yana samar da wani Layer mai ƙarfi, mai kama da juna kuma mai jure tsatsa ta hanyar matakai kamar tsoma zafi ko electroplating, wanda ke haifar da tsawon rai na aiki na ƙarfe.
Fentin feshi wani nau'in fasahar gyaran saman da ake amfani da shi don ƙarfe ko wasu kayayyaki. Tsarin shafa wani abu mai ruwa-ruwa daidai gwargwado a saman kayan ta hanyar feshi sannan a busar da shi ta halitta ko a gasa shi a ƙananan zafin jiki, sakamakon haka ana samar da wani fim mai santsi, iri ɗaya kuma mai ƙarfi na kariya wanda kuma za a iya amfani da shi azaman launi da ado ga kayan.