Which to buy · Every setting
Eureka Oro Mignon XL vs Fellow Opus
Conical against flat — the Opus's scale curves where the other runs straight. The Opus is numbered 1–11; the Oro Mignon XL turns 0–24 rotations.
Which to buy
Choose the
Oro Mignon XL if you…
- want 65 mm flat burrs and stepless adjustment
- want two programmable doses and a dose counter on a touch display
- want a 300 g hopper, a universal fork and a tamping station
Choose the
Opus if you…
- want fixed steps you can return to exactly — 41 on the dial, plus a micro-adjust ring
- want filter and cold brew too — Fellow rates it from espresso to cold brew
- want a lighter grinder — 2.3 kg
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Fellow now sells the Opus 2 in place of the original; the settings on this page are for the original.
Sources: Fellow — Opus (archived) · Fellow — Opus gear guide · Eureka — Mignon XL
| Oro Mignon XL | Opus | |
|---|---|---|
| Brand | Eureka | Fellow |
| Scale | Rotations | Numbered dial |
| Dial range | 0.0 rotations – 24.0 rotations | 1 – 11 |
| Burrs | Flat | Conical |
| Espresso → filter | 6.5 rotations | 5.7 numbers |
| Filter → coarse | 7 rotations | 3.9 numbers |
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| Oro Mignon XL | Opus |
|---|---|
| 1.5 | 1.2 |
| 3 | 1.2 |
| 4 | 2 |
| 5.5 | 3.2 |
| 1+1 | 5.3 |
| 1+2 | 7.1 |
| 1+3 | 8 |
| 1+4 | 8.2 |
| 1+5 | 8.3 |
| 2+0 | 9.1 |
| 2+1 | 9.3 |
| 2+2 | 10.2 |
| 2+3 | 11 |
| Opus | Oro Mignon XL |
|---|---|
| 1.2 | 1.5 |
| 2 | 4 |
| 3.2 | 5.5 |
| 5.3 | 1+1 |
| 7.1 | 1+2 |
| 8 | 1+3 |
| 8.2 | 1+4 |
| 8.3 | 1+5 |
| 9.1 | 2+0 |
| 9.3 | 2+1 |
| 10.2 | 2+2 |
| 11 | 2+3 |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | Oro Mignon XL | Opus |
|---|---|---|
| Espresso | 2.5 | 1.2 |
| Moka pot | 4 | 1.3 |
| AeroPress (short steep) | 5.5 | 3.2 |
| Pour over — V60 / cone | 1+1.5 | 6.3 |
| Siphon | 1+2 | 7.2 |
| Pour over — flat bottom | 1+2.5 | 7.3 |
| Steep and release — Clever / Switch | 1+3 | 8 |
| Drip / batch brew | 1+3 | 8 |
| Cupping | 1+3.5 | 8 |
| Chemex | 1+4 | 8.2 |
| French press | 1+5.5 | 9 |
| Cold brew | 2+1.5 | 10 |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
Eureka Oro Mignon XL
Fellow Opus
Dialing in the Oro Mignon XL
Eureka's Oro line sits above the standard Mignons. Like the rest of the Mignons it is built espresso-first, so treat the coarse end of the dial as usable rather than its strength.
Dialing in the Opus
Marketed as all-purpose, and it genuinely does cover more range than the Ode, but the espresso end is workable rather than good — expect to chase it. Where it earns its place is the coarse end: cold brew and French press come out notably even. If you bought the Opus mainly for espresso, dial it as a brew grinder first and judge it there.