Single dosing on the Macap M4D

The M4D is Macap’s digital, doserless grinder: 58 mm flat burrs turning at around 1400 rpm, stepless adjustment, a 500 g bean hopper, and a backlit display that lets you programme single dose, double dose or continuous grinding.

Worth being precise about that programming, because the wording invites confusion. The M4D’s “single dose” setting is a timed dose — it runs the burrs for a set duration. It assumes a hopper with beans in it. It is not the same as single dosing in the sense of weighing individual beans in and grinding only those.

Turning timed dosing into weighed dosing

That is what this hopper changes. It replaces the 500 g hopper so you can load one weighed dose, grind it out, then press the silicone bellows to clear the chamber and chute. You keep the M4D’s stepless adjustment and digital control, and gain the ability to change coffee without emptying a hopper first.

Version 3

Every unit we ship today is Version 3. The bellows is a custom branded, factory moulded silicone part — it is no longer 3D printed, as our earlier versions were.

How it is made

• 3D printed: lid, lid lock ring, connector, air-leak prevention gasket
• Factory machine moulded: silicone bellows

Materials

• Lid, lock ring, connector: PETG hard plastic
• Air-leak prevention gasket: TPU — material info
• Bellows: factory moulded silicone

Fitting

This hopper is made for the grinder named on this page. Fit tolerances vary between units and production runs, so minor adjustment may be needed to seat it perfectly on your grinder. Every unit is covered by our 2 year warranty.