Commercial potato peelers are ideal for professional kitchens with heavy potato use. Peeling your own potatoes saves money as it allows a restaurant to buy in bulk. Potato peelers (also called rumblers) work by tossing the potatoes against gritted sides of the chamber.
Some models come with different plates and can also peel carrots and skin onions. Overfilling the machine will slow down the process and can waste large amounts of the potato.