Comandante C40 MK4 Lab Series Hammerhead – Hand Grinder with Hexagonal Block Blade
The first turn of the crank, the beans click between the burrs, and after just three or four rotations the aroma fills the room. With a bean like Pacamara – large, dense, a little unwieldy – you feel something different in your wrist. Less resistance, a smoother run, a sound that rings cleaner. That's the Hammerhead burr set at work.
The Comandante C40 MK4 Lab Series Hammerhead from our Comandante Collection is the newest variant of a hand grinder that has stood as a reference in specialty coffee for years. What's changed sits invisibly inside: the burr set. In the Bavarian Burr Lab in Germany, Comandante developed a new geometry – the hexagonal block blade, inspired by the head of a hammerhead shark. The shape isn't decoration. It changes how the bean is cut.
What makes the Hammerhead geometry special
Burrs are often treated as standard fare. They sit hidden inside the device, rarely getting any attention. Yet the geometry of the burr set plays a real role in determining which compounds are released from the bean. Coffee contains over 800 aroma compounds – more than wine. The Hammerhead block blade is shaped to shear larger, denser beans cleanly instead of crushing them. What comes through in the result: a denser body, a focused sweetness, clearly defined fruit aromas.
Comandante describes the Lab Series as an invitation to experiment – a space where the burr geometry itself becomes a variable. Our opinion is one of many, but we like this approach. A different burr geometry isn't better or worse than the classic Nitro Blade, just a different language telling the same bean's story differently. Anyone already drawn to Pacamara, Gesha or other large bean varieties will find a new playing field here.
The steel burr set is made from Nitro Rex® – a martensitic stainless steel from the Alpine region with over 17 percent chromium content and precisely balanced proportions of vanadium and molybdenum. The result is a hardness and corrosion resistance that keeps the burr set working consistently for years. The body of the grinder is stainless steel, the axle stainless steel, the crank stainless steel, the knob German oak, treated with a natural wax-oil finish. The Engine-Frame inside is Eastman Tritan, BPA-free. Two micro ball bearings with rubber seals keep the run smooth over the years. As a partner of Comandante, we carry the entire C40 family in Switzerland, in Bern and Zürich.
At a glance
| Burr set |
Hammerhead® with hexagonal block blade geometry |
| Burr material |
Nitro Rex® stainless steel (over 17% chromium, vanadium, molybdenum) |
| Application |
Filter, pour-over, French press, espresso – especially for larger and denser beans |
| Body |
Stainless steel |
| Axle and crank |
Stainless steel |
| Knob |
German oak, natural wax-oil finish |
| Engine-Frame |
Eastman Tritan, BPA-free |
| Bearings |
Two stainless steel micro ball bearings with rubber seals |
| Weight |
ca. 740 g |
| Bean Jar capacity |
approx. 40 g per container |
| Included |
Grinder, brown glass bean jar, transparent polymer glass bean jar, crank |
| Care |
Clean the burr set dry with a brush – no water |
| Origin |
Developed in the Bavarian Burr Lab, Germany |
Who the Hammerhead is made for
It's for anyone who already has a Comandante and wants to hear the aromas of their favorite bean from a different angle. It's for anyone stepping into this universe for the first time and wanting to go straight into the Lab Series. It's for anyone who loves fruity, complex, light roasts – Pacamara, Gesha, Heirloom – and for anyone curious about a new playing field with their coffee. A hand grinder in this league stays with you for years, often decades.
It's also for anyone who values the ritual of grinding. Dopamine doesn't rise only once the coffee is in the cup – it rises at the anticipation. Three minutes of cranking, the smell of the beans, the quiet in the room, that's part of what makes a cup more than just a drink. Nobody needs a Comandante. Some want one – and whoever wants it knows why.
What pairs well with it
A hand grinder in this league makes its best impression alongside an equally well-thought-out filter setup. For precise pour-over: affordable and solid, the classics from our Hario Collection or the Aeropress. Anyone wanting a brewer statement will find at Weber Workshops the BIRD. For the scale, it depends on how often you brew: affordable and precise are the models from our Normcore Collection, an Acaia offers an app, flow-rate display and Bluetooth. A kettle with temperature control belongs in the mix – the AURA Standard and the AURA FLUX (with temperature control) are in our Varia Collection.
Within the Comandante family there are upgrades that refine the experience further: the Red Clix axle for double precision in grind adjustment, the Black Crank XL for more leverage, additional bean jars. All in the Comandante Collection.
Frequently Asked Questions
What is the Hammerhead burr set especially suited for?
The hexagonal block blade geometry was developed in the Bavarian Burr Lab specifically for larger and denser beans. Pacamara, Gesha and similar varieties are sheared more cleanly. The result is a denser body with focused sweetness and clearly defined fruit aromas. Other beans work just as well – the Hammerhead simply plays out its particular strength with the large ones.
How does Hammerhead differ from Nitro Blade and Tigershark?
All three burr sets are part of the Comandante Lab Series and differ in geometry. Nitro Blade is the classic, universally designed variant. Tigershark has its own blade architecture. Hammerhead works with the hexagonal block blade and is geared toward larger, denser beans with fruity complexity. Which one is better depends on what you want to experience in the cup – it's not a hierarchy, it's a choice.
Is the grinder also suitable for espresso?
Yes. The C40 MK4 covers the entire spectrum, from French press to espresso. Espresso takes a bit more patience while grinding and fine calibration. A Red Clix axle is a useful addition here, because it halves the step size and makes it easier to hit the ideal setting.
How do I care for the Comandante C40 MK4?
The burr set is cleaned exclusively dry – with a brush, no water. The body is wiped down with a slightly damp cloth. The bean jars can be rinsed with warm water, both are food-safe and flavor-neutral. With normal use, the burr set is low-maintenance for years.
Can I see the grinder before buying?
Yes, gladly – you'll find us at the Zürich store at Hagenholzstrasse 50b and at the Bern store at Gerberngasse 44. Not every model is always physically present in both showrooms – write to us briefly at office@coffeecoachingclub.ch, if you want to be sure.
What's included in the delivery?
Grinder, brown glass bean jar, transparent polymer glass bean jar and crank. Both bean jars hold approximately 40 grams of beans each. Delivery is throughout Switzerland and to Liechtenstein in two to four working days.
From the Roastery
We especially like the Hammerhead with our Cozy Chocolate and Nutty Delight roasts, for anyone who likes a dense, full-bodied filter cup. For maximum body without any acidity, Very Nutty is the obvious choice. Anyone wanting to explore the fruity playing field the Hammerhead geometry builds its stage for – try Wild Peach. These are our recommendations, one voice among many. Every coffee path is valid.
