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Comandante C40 MK4

Buying guide · Hand · Conical burrs

Comandante C40 MK4

Buy it if filter coffee comes first and you want the hand grinder most recipes assume; add the Red Clix axle, or look elsewhere, if espresso matters.

Best for
Pour-over, AeroPress, Drip, French press
List price
About $299
Check price — Amazon →Settings chart →

BrewMark hasn't tested this grinder in person. This guide compiles the maker's specs and published reviews, listed under Sources. As an Amazon Associate, BrewMark earns from qualifying purchases.

In brief

The C40 MK4 is Comandante's hand grinder, and the one many published recipes quote. It uses 39 mm conical burrs in Comandante's Nitro Blade steel and a stepped adjustment you count by clicks. It comes with two 40 g bean jars, one glass and one polymer.

It is built for filter coffee. Homegrounds calls pour-over its strongest use case, with "fluffy and uniform" grounds. Home Coffee Expert says it excels from pour-over through French press.

The trade-off is espresso resolution and price. Each click moves the burrs about 30 microns, which Prima Coffee gives as the standard figure. Comandante sells a Red Clix axle to halve that.

What it does well

  • Grind consistency that Home Coffee Expert rates 9.5 out of 10
  • Strong for pour-over and French press, per Homegrounds and Home Coffee Expert
  • Low retention: Homegrounds got almost the full dose back
  • Shatter-resistant polymer jar included alongside the glass one
  • Large owner community and easy-to-find parts, per Home Coffee Expert

Where it falls short

  • About 30 microns per click is coarse for espresso without the Red Clix axle
  • No numbered dial: you count clicks from zero
  • Costs more than strong rivals such as 1Zpresso's, as both reviews note
  • Plastic internal parts, which Homegrounds says feel cheap at the price

Specs

Type
Hand grinder, Conical burrs
Burrs
39 mm conical Nitro Blade, high-nitrogen stainless steel
Adjustment
Stepped, counted clicks, about 30 microns per click
Capacity
40 g bean jar (glass and polymer jars included)
Weight
About 740 g (Home Coffee Expert)
Power
Hand
Warranty
No published terms; Comandante offers a repair service

Where to start on the dial

Pour-over 25 clicksAeroPress 19 clicksDrip 29 clicksFrench press 33 clicks

Every method on the settings chart →
On this page · 5 sections
  1. What it does well
  2. Where it falls short
  3. Who should buy it, and who shouldn't
  4. How it compares
  5. Owning it

What it does well

Consistency is why people buy it. Home Coffee Expert rates its consistency 9.5 out of 10, citing "phenomenal" grind distribution. Homegrounds calls it "unmatched grind consistency at a range of sizes."

It is pleasant to use. Home Coffee Expert says grinding "doesn't feel like a chore," and Homegrounds found it smooth with a sturdy knob. Homegrounds measured almost the full dose coming back out, so little coffee stays inside.

It is a well-supported grinder. Home Coffee Expert points to a large community and widely available parts. It also notes that the MK4 fixed an MK3 axle hole that trapped beans.

Where it falls short

Espresso is not its strength. Homegrounds found three or four settings in the espresso range, enough to dial in, but says there are better espresso grinders for the money. Home Coffee Expert's shot was "reasonable" but "wasn't exactly breathtaking," and it calls Red Clix "pretty much non-negotiable" for espresso.

There are no numbers on the grinder. You count clicks from the closed position, and Homegrounds notes that losing count means starting again from zero. The settings chart on this page gives clicks from that point.

It is expensive for what is inside. Homegrounds says the plastic interior "feels cheap" for the price. Both reviewers say the body is wide for small hands, and Home Coffee Expert found the polymer jar more prone to static.

Who should buy it, and who shouldn't

Buy it if you brew pour-over, AeroPress or French press and want one grinder that handles them all well. It also suits anyone who follows recipes, since so many are written in Comandante clicks.

Skip it, or budget for Red Clix, if espresso is your main drink. Skip it too if you want a numbered dial you can read at a glance. Home Coffee Expert says it would save money and buy the 1Zpresso J-Ultra instead.

How it compares

The 1Zpresso J-Ultra is the rival Home Coffee Expert weighed it against. It has an external numbered dial and 8-micron clicks, while the Comandante counts clicks. Home Coffee Expert thinks the Comandante's pour-over may be slightly better, though it calls that subjective.

For a filter-only kitchen, see ZP6 Special vs Comandante C40 MK4. The ZP6 is a pour-over specialist with a different click scale.

If budget matters, Comandante C40 MK4 vs Timemore C3 sets the reference grinder against the value one. Other common cross-shops are the Kinu M47 Phoenix and the KINGrinder K6. The grind converter translates Comandante clicks to any of them.

Owning it

Comandante says not to soak the grinder or put it in a dishwasher. Brush the burr and interior, or blow out dust with a lens blower. Comandante says Nitro Blade burrs need cleaning about weekly with heavy use, or monthly with light use.

Leave the three screws around the burr alone. Comandante's FAQ warns that undoing them can damage the grinder and void the warranty. Our hand grinder cleaning guide covers the routine.

Comandante's FAQ refers to a warranty but publishes no terms, and Homegrounds says there is no formal warranty. For broken or lost parts, Comandante points owners to their dealer or its repair service.

Home Coffee Expert adds that the bean jars are dishwasher safe, unlike the grinder itself.

Also worth a look

Sources

  1. Comandante: C40 MK4 Nitro Blade Black
  2. Comandante: FAQ
  3. Prima Coffee: Comandante Red Clix RX-35
  4. Home Coffee Expert: Comandante C40 review
  5. Homegrounds: Comandante coffee grinder review

By Jeff Gluck · Checked 2026-10-21