Because the burrs are doing more work per revolution. A grinder that feels stiff at espresso settings is behaving exactly as it should — this is not a fault, and nothing is wrong. What you can change is your grip and your leverage.
First, the reassurance
Grinding coffee finer means breaking each bean into more, smaller pieces. More pieces means more cutting, and more cutting means more force. Every hand grinder in the world gets harder to turn as you close the burrs, and the effect is steepest in the espresso range where you might be at seven to thirteen clicks from zero.
So if your C40 spins happily at twenty-eight clicks for filter and feels like real work at nine for espresso, it isn't broken. It's grinding espresso.
The wristband trick
Your grinder came with a Comandante wristband, and most people wear it or lose it. It has a second job: wrap it around the body of the grinder and it becomes a grip aid, giving your holding hand something to bite into instead of a smooth metal or wooden surface.
It sounds like a small thing. At fine settings, where you're fighting the grinder as much as the coffee, it makes a surprising difference — and it costs nothing to try, right now.
Grip: what your holding hand is doing
Most of the struggle at fine settings isn't in the cranking hand, it's in the hand trying to keep the body still. Improve that and everything else gets easier.
- Hold lower down the body, not up near the lid. More of your hand in contact, less leverage working against you.
- Brace it against something. A hip, a worktop edge, your forearm across your body — anything that stops the grinder rotating with the crank.
- Add a felt sleeve. Wool felt grips far better than a coated metal body, particularly with slightly damp hands, and it protects the finish while it's at it.
Leverage: the crank and the knob
The other half of the equation is how much mechanical advantage you have. A longer crank means less force at the knob for the same torque at the burr, which is simple physics working in your favour.
If you grind espresso regularly, a Black Handle Crank is the single most effective change you can make. The Single Crank is the option if you already have a lid you're happy with.
Knobs matter too, and more than people expect. A knob is where all the force goes through your fingers, and swapping to one that suits your hand is a nine-pound fix. Our standard wooden knobs pull off and push back on with a simple click closure, so trying a different one takes seconds.
When it isn't torque
Occasionally, stiffness genuinely is telling you something. Worth checking:
- Something is jammed. A single bean or a small stone caught between the burrs will feel like a hard stop rather than uniform resistance. Open the burrs a few clicks, clear it, and return to your setting.
- It needs a clean. A heavy build-up of coffee dust adds real drag. See how to clean your C40.
- It's assembled wrong. If you've recently stripped it down, check the washers — both should sit with the raised edge facing the bearing.
- The bearings are tired. Rare, but after years of daily use a fresh set of ball bearings can transform how a grinder feels.
The difference to listen for: normal resistance is smooth and even, and increases gradually as you close the burrs. A problem feels notchy, gritty, or catches at one point in the rotation.
The short version
Stiff at espresso is normal. Wrap the wristband round the body, hold lower down, brace against something, and if you grind fine every day, fit a longer crank.
And if it still doesn't feel right after all that, get in touch. We'd far rather look at it than have you wrestling with it.
