ʻEhia manawa o ke anawaena o waho mua o nā rivet makapō alumini?

Ma kahi o 1.5 mau manawa, akā he waiwai kuhikuhi wale nō kēia, a ʻokoʻa nā hoʻololi riveting o nā ʻano like ʻole o nā rivet alumini.