Planks of pre-treated dried cedar arrive on the factory and are promptly minimize into 7 inch long three inch large and quarter inch thick boards called slats. These slats are then lined up on a conveyor belt that’s programmed to move them along at a steady tempo. The slats move underneath wood planes to be shaved completely smooth and flat earlier than they move on to the groove cutters.
Archaeologists have found samples of silk in China which date again to 3500 BC, and silk fibers have been found in Egyptian Mummies over 3000 years outdated, indicating that silk may be one of the oldest commodities in international trade. The Chinese language emperors tried to maintain the strategy of silk manufacture secret in order to preserve a monopoly, although they often gave silk as a diplomatic reward. For hundreds of years they were largely successful.