All about leather making is an prehistoric art that has been practiced for more than 7,000 years. Raw skins were dried in the sun, softened by pounding in animal fats and brains, and preserved by salting and smoking. Starting with simple drying and curing techniques, the procedure of vegetable tanning was developed by the Egyptians and Hebrews about 400 BCE. And during the Middle Ages the Arabs conserved the art of leather processing and so improved it that moroccon and cordovan (from Spain) were became highly valued leathers.
Later leather tanning was once more widespread in European countries and by the mid 19th century with the invent of machines, all the operations of tanning were performed by these machines like splitting, fleshing, and dehairing were introduced. Moreover towards the end of the 19th century, the chemical tanning started, which included the use of oak, sumac, and hemlock tanbark and chrome salts etc.
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