Comandante C40 Nitro Blade Coffee Grinder MK4 (Copper Mountain)

Rocky mountain ranges, formed by unimaginable heat and pressure over millions of years, visible for miles. Their brutal, rugged, craggy appearance is often laced with rich bronze tones that catch the light in unexpected ways. Whether it's lingering snow reflecting the sun or quartz-filled granite glinting against a clear sky, these timeless giants have a presence that stops you in your tracks. The Copper Mountain finish is Comandante's attempt to bottle that feeling, bringing the deep, earthy bronze tones of the Bavarian Alps to your morning coffee ritual. It's a subtle, rich colour with a quiet sparkle that reveals itself differently depending on the light.

This grinder is part of Comandante's ongoing homage to the natural elements that surround their home near Munich. The powder coating isn't simply painted on; it's baked at high temperature for a finish that's as robust as the mountains that inspired it. Beneath that distinctive exterior sits the Nitro Blade burr set, the world's first heptagonal conical burr developed specifically for specialty coffee. The steel itself is sourced from an Alpine region with centuries of metalworking tradition, where experienced craftsmen have developed a proprietary recipe that delivers exceptional hardness, edge retention, and flavour neutrality. There's a pleasing symmetry in a grinder inspired by the Alps, built with steel from the Alps.

The MK4 generation brings thoughtful refinements to what was already a benchmark grinder. The redesigned engine frame eliminates trapped beans entirely, and the inclusion of an unbreakable polymer jar alongside the traditional brown glass offers flexibility for both home brewing and adventures further afield. At just over 600g, the C40 travels well, grinds smoothly, and delivers the kind of particle uniformity that has made it the trusted choice of World Brewers Cup champions and discerning home brewers alike. The solid European oak knob, handcrafted in Germany's Black Forest, completes the package with warmth and ergonomic comfort.

• Burr type: Nitro Blade heptagonal conical burrs (40mm)
• Burr material: High-alloyed, high-nitrogen stainless steel with fine martensitic micro-crystal matrix
• Burr hardness: Approximately 650 Hv
• Body material: Stainless steel with Copper Mountain powder coating
• Coating type: Baked-on powder coat (not painted)
• Grind adjustment: Stepped click system (12 clicks per rotation)
• Grind settings: 35+ settings (Turkish to cold brew)
• Throughput: Approximately 1 bean per turn at less than 3Nm torque
• Weight: Approximately 740g
• Dimensions: 150mm (H) x 60mm (D)
• Bean jar capacity: 40g per jar
• Included accessories: 1 x brown glass Bean Jar, 1 x clear polymer Bean Jar, attachable crank, Comandante wristband
• Crank knob: 100% natural European oak, handmade in Black Forest
• Axle bearings: 2 x stainless steel micro ball bearings with rubber seals
• Axle and crank: Stainless steel
• Engine frame: Eastman Tritan copolyester (BPA-free)
• Lid material: Urochem 371 (natural-based)
• Certifications: Aluminium-free, BPA-free, food-safe materials throughout
• Grind range: Turkish/espresso (fine) to cold brew (coarse)
• Origin: 100% Made in Germany

What colour is Copper Mountain exactly?

It's a deep, earthy bronze with a subtle sparkle that shifts depending on the light. Comandante describe it as a shimmering black-brown, inspired by the way sunlight catches the quartz-filled granite of the Bavarian Alps. It's warmer and richer than plain black, but understated enough to suit any kitchen.

Is Copper Mountain part of a series?

Yes. Comandante has released several colours as part of their ongoing homage to natural elements and the Bavarian landscape. These include Alpine Lagoon (inspired by turquoise mountain lakes), Sunset, Snow White, and others. Each captures a different aspect of the outdoors near their Munich headquarters.

What is the Nitro Blade burr set?

The Nitro Blade is the world's first heptagonal (seven-sided) conical burr designed specifically for specialty coffee. Developed through years of research at Comandante's onsite coffee lab, it uses a proprietary high-nitrogen stainless steel with individually sharpened cutting edges. The geometry is optimised for excellent throughput, reduced torque, and refined particle size distribution.

What brewing methods can I use with the C40 MK4?

The C40 covers the full spectrum of grind sizes. As a starting guide: Turkish coffee sits around 5-8 clicks, espresso 8-12 clicks, moka pot 13-15 clicks, filter/pour-over/AeroPress 20-28 clicks, French press 32-35 clicks, and cold brew around 34 clicks.

How does the click adjustment system work?

The grind adjustment dial sits beneath the burrs and engages twelve times per full rotation, producing an audible click at each setting. This locks your preferred grind in place, preventing accidental adjustment during grinding and allowing you to return to the same setting with precision every time.

What's improved in the MK4 compared to earlier versions?

The MK4 features a redesigned engine frame with modified geometry that virtually eliminates trapped beans. It also includes an unbreakable polymer bean jar alongside the glass option, and comes in sustainable, recyclable packaging. All parts remain backwards compatible with the MK3.

What's included in the box?

Each C40 MK4 Copper Mountain comes with one brown glass Bean Jar, one clear polymer Bean Jar, a lid, an attachable crank with oak knob, a Comandante wristband, and a comprehensive manual in sustainable packaging.

Is the powder coating durable?

Very. Unlike painted finishes, the Copper Mountain powder coating is baked on at high temperature, making it robust and resistant to chipping and wear. It provides a solid grip during grinding and maintains its appearance through years of regular use.

How do I clean the Comandante C40?

Never submerge the grinder in water or put it in the dishwasher. Wipe the exterior with a damp cloth when needed. For intensive use, disassemble and brush the burrs weekly; for lighter use, monthly cleaning is sufficient. Keep track of the small washers during cleaning. The bean jars can be washed with soap and water.

Where is the Comandante C40 manufactured?

The C40 MK4 is 100% Made in Germany by Comandante's team of craftsmen and women based just outside Munich, Bavaria. The oak crank knobs are handmade in Germany's Black Forest, and Comandante sources wood from Bavarian forests with strict traceability. They've also partnered with The Barn to plant over 1,000 trees as part of their environmental commitment.