Square Karfe Bar
Square Karfe Bar an tsara shi don samar da aikin. Ƙaƙƙarfan shingen ƙarfe mai murabba'in murabba'i tare da madaidaiciyar gefuna, sashe iri ɗaya, da ƙarfi mai ƙarfi don sassan injina, firam, goyan baya, abubuwan da aka ƙirƙira, da kayan aikin gini.