Honey extraction abrading the surface of the wax with moving chains or bristles or hot knives. This, while messy, makes the process easier than doing this task manually. Some beekeepers will also harvest (before uncapping the honey) the propolis, a resinous material bees gather to glue the frames together; propolis is used for its medicinal properties. Once uncapped, the frames are then placed in a honey extractor, which spins them so that most of the honey is removed by centrifugal force. Care must be taken to ensure that all frames are loaded correctly, as the comb is angled slightly upwards to prevent
Animal glue Tang Dynasty. Records indicate that one of the essential components of lampblack ink was proteinaceous glue. Ox glue and stag-horn glues bound particles of pigments together, acting as a preservative by forming a film over the surface as the ink dried. The Chinese, such as Kao Gong Ji, also researched glue for medicinal purposes. The use of animal glue, as well as some other types of glues, largely vanished in Europe after the decline of the Western Roman Empire until the sixteenth to eighteenth centuries, when wooden furniture started to surge as a major craft. During the medieval ages, fish