Cheesecloth

Eventually, at Bussmans discretion, he and another cheesemaker lean over the kettle with a large piece of cheesecloth in their teeth placing the 200 pounds of curds in a ball.

The ball of cheese is then placed in a wooden cheese wheel

Source: http://www.journalstandard.com/entertainment/x1685469957/-Oldest-food-fest-in-the-Midwest