Fig. 1From: Innovativeness in tradition: a study on the physical performance of leather scale armors during the Joseon DynastyManufacturing process of fish glue: (a) dried air bladder (200 g); (b) fish air bladder is soaked in water (1600 ml) for 13 h and is then cut into small pieces (width = 5–10 mm); (c) bladder is placed in a pot containing boiling water over medium heat for 3 h to maintain the temperature; (d) impurities are removed via filtering using a hemp clothBack to article page