DF64 Gen 1 grind settings.
The original 64 mm flat single-doser. Stepless worm-gear dial with a wide 0–90 reference scale.
The chart
Starting points, not targets. Each number carries a ± 1-setting band because that is the honest resolution of this dial — land inside the band, then let taste move you.
| Brew method | DF64 setting |
|---|---|
| Espresso anchor | 15 ± 1 |
| Moka pot | 23 ± 1 |
| AeroPress (short, fine) | 28 ± 1 |
| V60 / pour-over | 36 ± 1 |
| Kalita Wave | 40 ± 1 |
| Chemex / batch drip | 45 ± 1 |
| Clever / switch immersion | 53 ± 1 |
| French press anchor | 70 ± 1 |
| Cold brew | 78 ± 1 |
One setting on this grinder moves the grind by about 0.12 of a point on the 1–10 universal scale — so roughly 4 settings is the smallest change worth making between brews.
A chart gets you a starting number and then stops. Coffee Aeye quotes every recipe in DF64 setting to begin with — and when you rate the brew, it tells you which way to move and how many, on this dial.
€4.29 on Google PlayWhere these numbers come from
Two anchors, and interpolation between them. Espresso and French press are the only two bands that manufacturers and community charts actually document with any consistency, so those are the fixed points: espresso at 15 and French press at 70. Everything between is a straight line drawn through them, quantised to the setting this dial actually resolves.
Absolute accuracy is not possible and this page will not claim it. Burr wear, per-unit zero points and assembly tolerances all shift where a number lands. What the two-anchor method gives you is the right shape — correct spacing between methods, correct direction of travel — which is what you need to dial in efficiently. The rest comes from calibration.
How this grinder works
A worm-gear adjustment turns a continuous collar reading 0 to 90. It is stepless: the numbers are a reference scale, not detents. Because the zero point is set at assembly and drifts with burr seating, two DF64s rarely agree on the same number — this chart is a starting shape, and your own calibration is what makes it accurate.
Calibrating the chart to your own DF64
If the chart runs consistently coarse or fine for you, do not nudge every row. Re-anchor it:
- Find your espresso mark — the setting where a 1:2 shot in about 28 seconds actually happens on your machine. If you do not pull espresso, use the finest point where a moka pot does not choke.
- Find your French press mark — coarse enough that a four-minute steep is clean rather than muddy, and the plunger does not fight you.
- Enter both in Coffee Aeye. Replacing the two anchors corrects the zero point and the slope at once, and every method in between re-derives from your own two numbers.
This matters more on some grinders than others — it matters most anywhere the dial is stepless or the zero is set by hand.
Known quirks of the DF64
Per-unit zero drift is the defining quirk.
More than any other grinder in this list, the published number is a suggestion. Find your own burr-contact zero, set your own two anchors, and the 0–90 scale becomes genuinely precise.
Retention needs managing on Gen 1.
The original chute holds grounds. A bellows or a firm tap recovers most of it; without one, expect the first gram of a new bag to carry the last one.
Ninety reference points is real resolution.
Once calibrated, this scale resolves finer than almost anything else here. The wide anchors — 15 to 70 — are what that resolution buys you.
Moving the dial when a brew tastes wrong
The chart gets you into the right neighbourhood. Taste gets you the rest of the way, and the rule is the same on every grinder here:
| What you taste | What it means | Move |
|---|---|---|
| Sour, sharp, thin, empty finish | Under-extracted | Finer |
| Bitter, drying, harsh, ashy | Over-extracted | Coarser |
| Balanced but weak | Ratio, not grind | Hold |
| Balanced but overwhelming | Ratio, not grind | Hold |
On this dial, 4–8 settings is one meaningful step. Change one thing per brew. The full method is in the V60 dial-in guide.
Coffee Aeye holds this chart for all 18 supported grinders and closes the loop on it. Rate a brew and it converts the fault you tasted into a concrete move — how many setting on your DF64, in your own dial numbers, not a vague "grind finer". Calibrate your two anchors once and every recipe in the app re-derives to your unit. Get it on Google Play — €4.29, one-time.
Convert a setting to another grinder
Settings do not transfer between grinders — click sizes, burr geometry and zero points all differ. The grinder converter maps a DF64 setting onto any of the other 17 through the same universal scale this chart is built on.