Mafuta ogwiritsidwa ntchito, omwe amatchedwanso mafuta odzola, ndi makina osiyanasiyana, magalimoto, zombo kuti alowe m'malo mwa mafuta odzola, pogwiritsidwa ntchito ndi kuipitsidwa kwakunja kuti apange chingamu chochuluka, okusayidi ndipo motero amataya mphamvu. Zifukwa zazikulu: Choyamba, mafuta omwe amagwiritsidwa ntchito amasakanikirana ndi chinyezi, fumbi, mafuta ena osiyanasiyana ndi ufa wachitsulo wopangidwa ndi makina ovala, zomwe zimapangitsa mtundu wakuda komanso kukhuthala kwakukulu. Chachiwiri, mafutawo amawonongeka pakapita nthawi, ndikupanga ma organic acid, colloid ndi zinthu ngati phula.