How Do Drip Filter Coffee Machines Work? You may be amazed by the number of parts in this type coffee maker if unfamiliar with it. It starts with a reservoir with a water tube leading up to it and a heating element inside which is used to heat the water. https://wwwcoffeeeuk31886.buyoutblog.com/30486813/what-freud-can-teach-us-about-drip-coffee