Eureka · Flat burrMignon Libra
A Mignon Specialita with a built-in scale bolted on: grind-by-weight dosing straight into the portafilter, so you stop babysitting a separate scale every morning.
The short version
This is a Eureka Mignon Specialita wearing a load cell, and that is exactly the point: proven 55mm flat-burr grinding with weight-based dosing that actually holds to a couple tenths of a gram.
Buy the dosing funnel or ring separately, because without it the throw pattern makes a mess and the grinder cannot finish weighing.
Why people buy it
- Grind-by-weight dosing removes the weigh-dose-weigh ritual entirely and holds around plus or minus 0.1-0.2g
- Compact Mignon footprint that fits tight counters while still running proper 55mm flat burrs
Why they don’t
- The dosing funnel or ring is sold separately on most retailers, and without one the grinder scatters grounds because it cannot tap-settle mid-weigh
The full tally
- Grind-by-weight dosing removes the weigh-dose-weigh ritual entirely and holds around plus or minus 0.1-0.2g
- Compact Mignon footprint that fits tight counters while still running proper 55mm flat burrs
- Stepless micrometric adjustment borrowed from the larger Mignon XL gives finer control than the standard Specialita
- Quiet for its class thanks to Eureka's anti-vibration and motor insulation work
- The dosing funnel or ring is sold separately on most retailers, and without one the grinder scatters grounds because it cannot tap-settle mid-weigh
- Espresso-only geometry on the standard Libra means it is a poor choice if you also want to grind for filter or French press
- Some owners report quality-control inconsistencies out of the box (loose screws, on/off switch issues) that mean a unit-to-unit gamble
What the community knows
Years of owner threads, distilled — well regarded.
Quiet, repeatable flat-burr grinder that punches above its price in build and consistency — but thin community documentation and Eureka's smaller accessory footprint mean it lacks the vocal advocacy and ecosystem depth that would elevate it to default-rec status.
Value
price-to-performance the community respects
Reliability
shows up every morning, year after year
Built to last
years before you outgrow or replace it
All 9 community measures
price-to-performance the community respects
shows up every morning, year after year
parts and repairs — you are never stranded
mods, guides, and community know-how around it
kind to first-timers
years before you outgrow or replace it
how far the cup can go, per dollar
speed and simplicity, day to day
Worth knowing before you buy — Most owners wish they'd heard about it sooner — solid prosumer buy that competes with machines twice the price, but the weak hype cycle means many overlook it for flashier defaults.
The measurements
Scored 0–5 on the same rubric as everything on file — the words matter more than the numbers.
The measurements
0–5, one rubric- Espresso
- reference4.5
- Versatility
- single-purpose1
- Built to last
- durable3.5
Position in the market
Every dot is a rival, measured the same way. The gold one is this.
- Upper half for espresso suitability
- a higher ceiling than 112 of the 154 grinders we’ve measured
- A value pick at this level
- 80% of grinders this capable cost more
- Lower half for build
- sturdier than 25% of the field, by the community’s own record
Every dot is a grinder measured on the same rubric. See the whole market
Living with it
The part spec sheets skip: counter space, upkeep, and what owners learn later.
The honest note — Owners who want to also grind for filter typically add a Libra 65 AP or a dedicated brew grinder rather than push the standard Libra's espresso-tuned 55mm burrs into that role. Those chasing more clarity or single-dose zero-retention workflows tend to move up to premium single-dose grinders (Niche-class or DF64/SSP-class) once they outgrow the built-in hopper workflow.
The full spec sheet
- Class
- Midrange
- Burrs
- 55mm flat
- Drive
- Electric
- Adjustment
- Stepless
- Clarity lean
- Balanced
- Espresso suitability
- 4.5/5
- Brew versatility
- 1/5
- Retention
- ~2.4 g
- Single dosing
- No
- Hopper
- 300 g
- Workflow demand
- 1/5
- Maintenance
- 2/5
- Noise
- 2/5
- Build longevity
- 3.5/5
- Dimensions
- 12.4 × 19.2 × 43 cm
Before it arrives
What completes this grinder — the faded pieces can wait.
Hover any piece for its why.
- Grinder cleaning kit — Brushes and grinder tablets keep retention and stale grounds in check.
Feed it right
Week one is dial-in — and stale beans will lose it.
Coffee more than a few weeks past roast won’t extract predictably, and a new grinder gets blamed for it. A balanced burr set: rotate origins freely — it will keep up.
Pick your coffee — any of these dials in beautifully here:
Wild Ember - Ethiopian Buno Dambi UddoSCA 92Medium roast · Odo Shakiso, Guji Zone, Oromia · NaturalBlueberry · MarmaladeSteady and repeatable — right for this setup’s lane.CA$26.83 · roasted to order
Etherea - Ethiopian YirgacheffeSCA 88Medium roast · NaturalJasmine · BergamotSteady and repeatable — right for this setup’s lane.CA$24.16 · roasted to order
Sergio - Brazillian Fazenda Joia Rara Aerobic FermentedSCA 88Medium-light · Cerrado Mineiro · Aerobic FermentedHoney · OrangeSteady and repeatable — right for this setup’s lane.CA$29.18 · roasted to orderWhole bean, dated, ready for your burrs the week it lands.
Roasted to order, daily, in Ajax, Ontario · ships Canada-wide. We’re the roastery behind this database — measuring the machines is how we make sure the coffee gets a fair shot.
On film
How it runs on camera, from around the community.
Common questions
Does the Eureka Mignon Libra come with a dosing funnel?
Most retailers include the 58mm dosing funnel in the box, but a dosing ring is often sold separately, and reviewers note the grinder throws grounds around without one since it cannot tap-settle mid-weigh cycle.
Is the Mignon Libra good for filter coffee too?
No. The standard Libra uses espresso-focused 55mm burr geometry, so it is not well suited to filter or French press; Eureka sells a separate Libra Brew and a Libra 65 AP for all-purpose grinding.
How accurate is the grind-by-weight dosing?
Retailers and independent testing describe accuracy within about 0.1 to 0.2 grams of the target dose per grind cycle.
Worth comparing
DF64 / Turin (Frigga)
DF83V Variable Speed Grinder
An 83mm vertical flat-burr single-dose grinder with variable-speed control and an auger prebreaker, built by Frigga and sold under a dozen storefront names. Big performance for the money, but the fit and finish shows where they cut corners.
CA$950–1,100 · US$699–799
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