Ecaleni I-Arca yi-monolith ebanjiswe ngomnatha, isifuba esidada ngokuhamba kunye neziqulatho zayo. Isikhongozelo se-mdf esi-lacquered, esifakwe kumnatha ofanelekileyo owenziwe nge-oki eqinileyo, sixhotywe ngemigca emithathu yokutsala inokulungelelaniswa ngokweemfuno ezahlukeneyo. Umnatha womthi oqinileyo oqinileyo uye wamodareyithwa ukuze kufakwe iipleyiti zeglasi yokukhanya, ukufumana ubume bezinto eziphilayo obufana nesipili samanzi. Ikhabhathi yonke iphumle kwinkxaso ebonakalayo ye-methacrylate ukuze ugxininise ukuntywila okufanelekileyo.