What's Happening Inside Your Filter Coffee Maker? A filter coffee machine is a cheap and easy to use machine that produces filter ground coffee. It is operated by heating water in an aluminum tube & then allowing it to flow through ground coffee. There are a variety of ways to https://coffeee35685.ampedpages.com/you-ve-forgotten-drip-coffee-makers-10-reasons-that-you-no-longer-need-it-57695981