Workers put the mixed materials into the furnace., The sand melts because the furnace is very hot., The hot liquid glass floats on liquid tin. They do not mix. This makes the glass very smooth., The liquid glass becomes a sheet with a uniform thickness, it cools and hardens., The glass comes out of the tin bath. It goes through a long cooling tunnel. It becomes cooler slowly., Machines cut the glass into the right size., FURNACE, MOLTEN TIN BATH, CUTTING, FINISHED PRODUCT.

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