Kwayoyin hatimi gabaɗaya ana yin su da ƙarfe, wanda aka fi sani da ƙarfe na carbon. Ƙarfe ana yi masa guduma ko kuma a juye, kuma launinsa na halitta shine sakamakon masana'anta. Don hana tsatsa, yana buƙatar electroplating. Bakin karfe kai{3}} ƙwaya, duk da haka, baya buƙatar lantarki. Ga baƙin ƙarfe, launi na electroplating gabaɗaya abokin ciniki ya ƙaddara, dangane da launi da ake so. Akwai kuma bukatu don karkowar gishiri. Wasu launuka na lantarki suna buƙatar dogon lokacin feshin gishiri, yayin da wasu ke yin tsatsa a cikin 'yan sa'o'i. Wani abu kuma shine ko abokin ciniki ya yi niyyar fitar da samfurin. Gabaɗaya fitarwa yana buƙatar suturar da ba ta dace da muhalli ba, wasu kuma a cikin gida, wasu suna yi, amma galibi ba sa.
Mafi yawan wutar lantarki da ake amfani da shi don kai - ƙwaya a kasuwa shine zinc blue mai kyau ga muhalli, saboda yana iya jure gwajin feshin gishiri har tsawon awanni 72, ko kwana uku. Irin wannan nau'in lantarki yana ba da ƙarfin feshin gishiri mai tsayi. Farin nickel, alal misali, yana da ɗan gajeren lokacin feshin gishiri, yawanci yana tsatsa cikin sa'o'i kaɗan, baya wuce sa'o'i 10. Amma wasu farar nickel plating za a iya mai, kuma lokacin fesa gishiri na ƙwayayen rivet ɗin mai na iya zama tsayi.