How to Use the MiiCoffee DF64 II Coffee Grinder (Step-by-Step Setup & Grinding Guide)

Written by Sarah Jenkins with 5 years of hands-on grinder time. Last updated: August 26, 2026.

My chrome dial slipped past zero during my first week with the DF64 II. I ground a whole bag too fine for pour-over. Mismatches like that are common on a stepless dial with no clicks to guide you. How to use MiiCoffee DF64 II grinder comes down to three moves. Set the dial, dose your beans right, and adjust the feed for espresso or filter. The ionizer and anti-popcorn disc are what make this routine feel different from a hopper-fed machine.

How Do You Set Up the DF64 II for the First Time?

Setup takes five to ten minutes. You seat the burrs, attach the hopper or bellows, plug in the unit, and zero out the dial before your first grind.

Start by unpacking and checking the parts. You should have a bellows hopper with a wood lid, a 58mm aluminum dosing cup, a rubber adapter, a cleaning brush, and a manual. Next, seat the upper burr carrier into the chamber. It locks into one of three positions, held by a wave spring that keeps the whole chamber stable. A loose or wobbly feel almost always traces back to this step.

Before you dial in anything, find zero on the chrome collar. Factory zero varies slightly from unit to unit, so don’t trust the number printed on the dial. Then plug it in. For a closer look at the grinder’s build, burrs, performance, and real-world pros and cons, see our MiiCoffee DF64 II review. MiiCoffee sells the DF64 II in both a 110V US-plug version and a 220V EU-plug version, so double-check which one you ordered before you flip the switch.

How Do You Dial In the Stepless Grind Adjustment?

Turn the chrome collar toward a lower number for finer espresso grinds. Turn it higher for coarser pour-over grinds. Because the collar is stepless, even a quarter turn can shift the taste in your cup.

The 90 markings on the dial are guides, not clicks. The collar moves smoothly between them, with no detents to stop it. Adjust in small increments, a quarter to half a mark at a time, and brew before you touch it again. Chasing a shot time by cranking the dial in big jumps almost always overshoots.

Expect the collar to feel stiff for the first few weeks. It loosens up with regular use, and that’s a texture change, not a defect. The tradeoff with stepless adjustment is that you can’t “remember” a numbered setting exactly the way you can on a click-stop grinder. Write down your rough spot on the dial for each bag of beans instead, since the DF64 II won’t hold it for you.

How Do You Single-Dose Beans With Near-Zero Retention?

Weigh your beans first. Load them through the bellows hopper, grind, then squeeze the bellows a few times to push out trapped air and any last grounds. Finally, check your output weight against what you put in.

MiiCoffee rates the DF64 II at under 0.1 grams of retention, even without the bellows attached. The real number depends on your habits, though, not just the hardware. I came across a home-barista forum thread where an owner of an earlier DF64 model described static clinging to the inside of the chamber after skipping the blow-out step for a stretch. 

Once they went back to squeezing the bellows every grind, the static and the leftover grounds dropped back down to a level they barely noticed. The fix cost nothing but sticking with the routine.

The plasma generator, or ionizer, sits inside the exit chute and does most of the heavy lifting here. It’s why grounds tend to fall straight into the cup instead of clinging to the chute walls on the MiiCoffee DF64 II grinder. Reliable weighing, dose in and dose out, comes down to that one part doing its job.

How Do You Switch Between Espresso and Pour-Over Grinds?

Move the dial toward the fine end for espresso. Move it toward the coarse end for pour-over or drip. The same 64mm stainless steel burrs handle both jobs, just across a wider range than an espresso-only grinder offers.

In practice, that means a fine espresso grind before work and a coarser batch grind for weekend pour-over, all on one machine. Coarser settings feed faster and run a touch quieter than fine espresso settings do. 

Compare that to a basic blade grinder like a Cuisinart, which chops rather than crushes and can’t repeat a grind size at all. Flat burrs give you both range and a steady grind in the same footprint.

How Do You Keep the DF64 II Running Well Between Deep Cleans?

A quick brush-out of the chute and burr chamber every few days prevents the oil buildup that slows grinding and dulls flavor over time.

Brush loose grounds out after each session, and check the chute for clinging static once in a while. It’s rare with the ionizer running, but oily dark roasts can still leave a bit of residue behind. This is light, day-to-day upkeep only, not a substitute for a full teardown when things start feeling gunked up. For the full step-by-step maintenance routine, see our guide on how to clean the MiiCoffee DF64 II. 

FAQ

Does the DF64 II work with pre-ground coffee, or only whole beans? 

It’s built for whole beans only. Pre-ground coffee will just sit in the hopper without anything for the burrs to grind.

How long does the stock burr set usually last before it needs replacing? Stainless steel burrs like the ones that ship on the DF64 II usually last three to five years of regular home grinding before you notice a real drop in performance.

What’s the price difference between stock burrs and upgrading to SSP burrs? 

The DF64 II ships at $399 with its stock burrs included. SSP’s 64mm sets run roughly $130 to $250 depending on the profile, with unimodal at the low end and high-uniformity or multi-purpose burrs toward the top.

Is the dosing cup food-safe, and what’s it made from? 

Yes. The 58mm dosing cup is made from food-grade aluminum.

Does installing third-party SSP burrs void the warranty? 

No. MiiCoffee’s warranty policy clearly allows installing SSP burrs or other burrs made to fit, as long as you don’t damage the grinding chamber or the burr carrier while doing it. The burrs themselves still aren’t covered under the standard one-year warranty.

Where can I buy replacement parts if something wears out? 

MiiCoffee sells parts directly through its own shop, and stock DF64 II units also show up on Amazon if you’d rather order through a marketplace you already use.