Macap M2D The M2D is an outstanding option for the home barista. The compact-sized M2D is a breeze to use and has all of the features you could need in a coffee grinder for home. The M2D grinds fresh every time and the operation is extremely simple with just a touch of your porta-filter to the tongue on the grinder activating the grind. The grind is easily adjusted and locked in with the stepped grind adjustment at the neck of the grinder. The M2D can program a dose using a dial located at the bottom of the grinder.