the ideal manual coffee grinder for espresso

Buy your own coffee beans and grind it yourself using a manual grinder is the first step to brewing delicious coffee.

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No matter which extraction method you choose (espresso machine, Chemex, V60, French Press, Aeropress), it all starts with freshly ground beans. Thus, your coffee does not oxidize and offers all of its aromas.

For the preparation of an espresso, the requirement is higher, because it is necessary to be able to obtain a fine, homogeneous grind of consistent quality. This precision is not easy to achieve with a manual mill. However, the Kinu brand has completely succeeded in this bet thanks to its premium manual coffee grinder : the Kinu M47.

Let me introduce you to one of the rare manual mills that allows you to make espresso grind from a micrometric adjustment !

A robust manual mill

The high end

Kinu M47

9.2/10Our score

  • Capacity 40 to 50 g of coffee
  • Stainless steel body
  • silicone ring
  • Micrometric adjustment
  • 50 notches per revolution
  • 47 mm conical wheels made of reinforced steel

The Kinu M47 manual coffee grinder is equipped with 47 mm conical burrs made of reinforced steel with a specific treatment, Black Fusion. This treatment ensures a better longevity, as well as a speed of grinding, without effort.

This manual coffee grinder is made of quality stainless steel (its precise internal mechanism is also reinforced). It is therefore not particularly light, but the quality of its materials makes it a sturdy grinder. The ABS parts (the grinder container and the handle knob) are guaranteed BPA free.

An easy grip

A manual coffee grinder must be easy to handle and clearly the Kinu M47 ticks this box perfectly!

This model has very good ergonomics:

  • a silicone ring prevents the grinder from slipping out of your hands and provides a stable grip when grinding coffee beans;
  • a thumb rest is attached to the mill. Very practical when holding the mill with one hand to turn the crank with the other;
  • the mechanism has 4 ball bearings (two for the axle and two for the grinding wheels) which ensures stable and easy rolling.

To know: to weigh your grain, it is possible to detach the lower part (where the grind is received) and use it as a container when you weigh your beans on your coffee scale. Very practical if you are not at home and want to clutter up as little as possible.

The Kinu M47: high-end manual mill

The Kinu M47: ideal for an espresso grind

A fine and homogeneous grind

To obtain a good espresso, you need a perfectly homogeneous grind

The Kinu M47 is one of the few manual mills capable of making micrometric what makes it ideal for espresso. Very easy to use, this high end grinder provides precision and grinding regularity impressive for a manual mill.

Its regularity is made possible thanks to very thick rods which keep the wheels in line. Indeed, when the millstones move in the axis, it gives an irregularity of grinding that can be found on other manual mills.

the micrometric adjustment is simply done on top of the grinder and allows the gap between the grinding wheels to be adjusted. One revolution corresponds to approximately 50 notches (of 0.01 mm), which ensures formidable precision.

And to find out where you are and easily find your settings, a line shows you which setting you are at.

Very little retention

The other advantage of this high-end manual mill is that the retention is very low since there is direct access between the millstones and the container where the grind is received.

Attention : the receptacle part can be removed quite easily since it is only held by a simple joint. When grinding, be sure to hold the grinder from above and not at the level of the receptacle, as you could unintentionally detach it.

Very easy to handle

Comparison between two high-end manual coffee grinders: the Commandante C40 and the Kinu M47

The high end

Commander C40

9.5/10Our score

  • Precise mechanism
  • Heavy Duty Conical Grinding Wheels
  • Homogeneous grind
  • Simple adjustment
  • Stainless steel grinder
  • Encapsulated axle, double bearing with stainless steel ball bearings
  • Removable and pressure-fixed oak crank

I was really impressed with the quality of the grind offered by the Kinu M47. Its use made me think of that of another manual mill: the Commandante C40.

So I wanted to make a comparison between these two high-end manual coffee grinders!

Quality materials for different looks

The Commandante C40 uses 39mm High Nitrogen Steel conical burrs, while the Kinu M47 features 47mm Black Fusion Steel conical burrs. Both of these wheels are extremely durable and will last you for many years.

These heavy-duty grinders both offer very good quality materialse. However, their looks are completely different.

The Commandante C40 has a nicer and more recognizable look. It is available in many colors and also offers a wooden version. For its part, the Kinu M47 has a much more sober aesthetics, and offers only one version while stainless steel.

Notch mill and micrometric mill

The big difference between the Comandante C40 and the Kinu M47 is their adjustment system. Indeed, the Commandante C40 is equipped with a notch system while the Kinu M47 offers a micrometric adjustment.

The adjustment of the millstones is easily done on the top of the device with the Kinu, while for the Commander you will have to remove the receptacle, because the adjustment is done from the bottom of the mill.

On the speed side, count 50 seconds to 01 minute to grind your grain for an espresso with the Commandante against 30 to 40 seconds with the Kinu which is therefore slightly faster.

Finally, on the practical side, the Kinu allows you to easily reproduce a setting thanks to clearly identifiable numbers on the adjustment wheel as well as a line indicating where you are. On the contrary, you will not find a number to indicate which setting you are in and it is therefore more complicated to find your preferred setting with the Comandante.

Some ergonomic differences

The Commander is a bit wide, which is not very practical since you have to hold it with one hand when using it. The grip is more pleasant with the Kinu. The grinder is narrower and its thumb rest makes all the difference!

The Commander’s grind receptacle is made of glass and can hold 40g. This material is therefore fragile, but its transparency allows you to quickly see the quality of your grind, but also when it needs to be cleaned.

Another advantage, the Commander comes with two receptacles. Very practical for preparing a dose of ready-to-use grains when you go on the move without your scale, for example.

For its part, the grind receptacle of the Kinu has a capacity of 35g and is made of metal which makes it much more solid.

Finally, the Commander is much lighter since it weighs almost half the weight of the Kinu: 630g against 1170g. An argument that can be important if you carry your manual grinder in your backpack to use it outdoors.

Versatile grinders

The two mills are versatile and can grind for all types of coffee you want: espresso, Aeropress, French Press, Hario V60, Chemex, etc.

But if it is necessary to decide between them to know for which method they are the best, I will surely say this:

  • for an espresso grind my heart leans towards the Kinu M47 thanks to its micrometric adjustment, but above all to its precision and regularity;
  • I will choose the Commandante C40 to prepare grinds of slow coffee for a chemex, aeropress or a French Press

But honestly these two mills are tops and offer a quality grindit’s up to you to choose which one suits you best.

Weekly deep cleaning is recommended


How to maintain the Kinu M47 grinder?

Every week, you can clean this grinder using a Puly Grind type powder and pass a brush stroke to remove the residue. Then every 1 or 2 months, I recommend a thorough cleaning with a complete dismantling of the mill.

What type of grind can you prepare with this grinder?

The Kinu M47 is versatile, you can use it for filter coffee and soft methods, but also for espresso with pressurized filters or simple filters. The grind quality of the Kinu M47 is perfect to accompany an espresso machine.

How to insert the beans in this grinder?

The filling of the grain part is done very easily from the top of the body of the mill, without having to disassemble it. And it is possible to put up to 40 gr of coffee in it.

The high end

Kinu M47
  • Excellent grind quality, especially for espresso
  • Solid build
  • Easy to adjust grind settings
  • Micrometric adjustment
  • Very little retention
  • Very fast
  • A little expensive
  • Not very light

My opinion on the Kinu M47 manual mill

The Kinu M47 is a truly premium manual coffee grinder. Thanks to his micrometric adjustmentvery rare on a manual mill, you will benefit from a fine, precise and homogeneous grindideal for espresso.

These 47 mm conical wheels made of reinforced steel ensure a long life, as well as a speed and ease of grinding without any effort.

It is rare to find a manual grinder that can prepare grinds for slow coffee as well as for espresso, Kinu M47 is clearly one of those exceptions! With this model you can prepare any grind, in seconds, no matter where you are.