A well designed machine. I had an electric grinder, it just thrashed the beans and did not produce a consistent size unless all the coffee was ground into a powder. This one lets the coffee through to your setting everytime. I use a heaping full 15 ml scoop, app 6.5 grams of bean. Left at the factory setting, along with 600mls water it makes a medium strong 570 ml cup. (15ml=1 tbs / 6.5 grams=0.22 ounce / 570ml=16 ounce). App 30mls water is left with the grounds. One caveat is that the metal is somewhat brittle, be careful to align perfectly when attaching the base to the upper body. If you damage the threads it won't be repairable.