Iyunithi yokuqala iyafana neyesibini. Ukuba ukongeza amanzi ke iyunithi ingasetyenziselwa ukususa umgubo wokushicilela. Iyunithi yesibini luyilo lwe-roller ezintathu, i-roller yayo ye-rubber ithatha izinto ezithile ukuze ikwazi ukugqoka imveliso ngesiphumo esihle. Kwaye ihambelana neoli esekelwe kumanzi / ioli kunye ne-blister varnish, njl njl. Iyunithi inokulungelelaniswa ngokufanelekileyo kwicala elinye.