Hopper: The top funnel where you pour raw, un-milled paddy : Cracks and removes the hard outer protective cover (chaff) from the Chamber: Uses friction or rollers to scrape off the brownish outer skin (bran layer) of the rice kernel.Polisher: Smooths the outer surface of the white rice to give it a clean and shiny : Separates whole rice grains from broken pieces and filters out fine dust or leftover waste.