What’s the hexagonal funnel for? I can’t find pictures showing its purpose. – from Ramsey S.

Many people measure the amount of coffee they wish to use at the beans stage and then put the beans into their grinder. The funnel is designed to facilitate pouring from a grinder bin directly into the AeroPress chamber. Some people have tried using the funnel to facilitate pressing into smaller mugs. We did not design the funnel for this use and strongly advise only pressing into a large, sturdy mug.