To make a homemade coffee filter, fold a paper towel in half and in half again. Turn it into a cone with three sides to the back and one side to the front, and pop it into the top of the coffee maker.
Once the homemade coffee filter is ready, add the preferred amount of coffee beans and water. For best results, choose a strong paper towel with no decorative embossed patterns as these can make the coffee filter too porous. A homemade coffee filter such as this works for a regular pot of coffee. Results may vary if attempting to make a larger amount of coffee.