The History of Eureka: A Century of Italian Grinder Craftsmanship
The History of Eureka
A century of Florentine grinder craftsmanship, from Aurelio Conti's 1920 workshop to the precise, hand-assembled machines that carry the Eureka name today.
Eureka is an Italian coffee grinder manufacturer founded in Florence in 1920 by Aurelio Conti. Operating today as Conti Valerio Srl in Sesto Fiorentino near Florence, it is known for precise, quiet, hand-assembled grinders. Eureka is recognised for its stepless micrometric grind adjustment, long-lasting burrs, and the popular Mignon home grinder range.
- Eureka was founded in 1920 by Aurelio Conti, and did not start with coffee grinders at all.
- It is 100% made in Florence and entirely hand-assembled, which is central to the brand's identity.
- Two features define it: stepless micrometric grind adjustment and the ACE anti-clump, anti-static system.
- The Mignon range is one of the best-known home and prosumer grinder families in the world.
- The commercial Helios and Atom ranges bring the same engineering to the café bar.
Origins: A Florentine Workshop in 1920
Eureka began in 1920, when Aurelio Conti opened a small engineering workshop in Florence. Interestingly, it did not start out making coffee grinders at all. The early Eureka workshop produced electrical household appliances, including milk-shakers, mixers and other small machines for the home and trade.
It was after the Second World War that the Eureka name began to appear on coffee grinders, alongside a range of other small appliances. Over the following decades, grinders became the heart of the business, and Eureka built a reputation for careful engineering and reliable, good-looking machines.
A Family Business Across Three Generations
Eureka has stayed close to its founding family throughout its history. The passion and attention to detail that Aurelio Conti brought to the workshop passed to Valerio Conti, and the company today operates as Conti Valerio Srl, based in Sesto Fiorentino just outside Florence, under the continued direction of the Conti family.
That continuity matters to the brand's identity. Eureka markets itself as a 100% Made in Florence product, entirely hand-assembled in its Florentine factory, where industrial production is combined with genuine craftsmanship. It is a rare thing in a world of mass-manufactured equipment, and it is central to why the brand is trusted.
What Eureka Is Recognised For
Two pieces of engineering define the Eureka name for anyone who knows grinders.
Stepless micrometric adjustment
Near-infinite grind settings rather than fixed steps, so a barista can dial in with real precision. Because the system repositions the burr rather than relying on click stops, it also allows fine, repeatable control.
The ACE system
Standing for Anti-Clumps and Electrostaticity, this dispenses ground coffee that is clump-free and free of static cling, which keeps the workspace clean and dosing consistent.
Beyond the engineering, Eureka is recognised for grinders that are quiet, consistent and built to last. The Mignon Silenzio makes that reputation explicit, built around quiet operation for anyone grinding early in a sleeping house, while the Mignon Speciality has become the reference point for serious home espresso. The Mignon family as a whole is now one of the best-known home and prosumer grinder ranges in the world.
Innovation Without Losing the Thread
Eureka has kept developing rather than resting on the Mignon's success. The single-dose approach, where you grind only what you are about to brew, arrived in models like the Mignon Zero 65, which pairs 65mm flat burrs with ultra-low retention so you can switch between espresso and filter without waste. The premium ORO line, launched in 2020 on the company's centenary, took the idea further with the Oro Mignon Single Dose, tilted fifteen degrees with a bellow to push nearly every gram through the chute.
The same engineering scales up to the bar. The Helios HSM65 is built for café service, fast enough that it never bottlenecks a two-group workflow, with a burr-life tracker that tells you when the burrs are due. Above it, the Atom Excellence 75B moves to 75mm burrs for higher-volume commercial sites.
A Modern Italian Success Story
Today Eureka is a substantial international business while remaining rooted in Florence. It produces well over 150,000 grinders a year, exports the overwhelming majority of its output to more than 50 countries, employs over 100 people, and reinvests around 5% of its revenue into research and development. It is proof that traditional craftsmanship and modern engineering can grow together rather than at each other's expense.
The Eureka Range at Buna
We stock a broad Eureka range at Buna, from the Mignon grinders built for the home kitchen through to the commercial machines built for a busy bar. A few are below, and you can compare the full Eureka collection alongside our wider coffee grinders range.
Mignon SilenzioBuilt around quiet operation for the home.R9,830
Mignon SpecialityThe reference point for serious home espresso.From R12,420
Mignon Zero 65Single-dose, 65mm burrs, ultra-low retention.R11,443
Oro Mignon Single DosePremium ORO line, tilted with a bellow.From R16,008
Helios HSM65Fast, precise, entry-level commercial grinder.R15,180
Mignon ManualeThe straightforward entry point into the Mignon family.R6,840
Frequently Asked Questions
Where are Eureka grinders made?
Eureka grinders are made in Italy, at the company's factory in Sesto Fiorentino just outside Florence. Eureka markets its grinders as 100% Made in Florence and entirely hand-assembled in its own facility, combining industrial production with traditional Italian craftsmanship. The company operates as Conti Valerio Srl.
When was Eureka founded?
Eureka was founded in 1920 by Aurelio Conti, who opened a small engineering workshop in Florence. It initially made electrical household appliances such as milk-shakers, and began producing coffee grinders after the Second World War, eventually making grinders the heart of the business.
What is Eureka's stepless micrometric adjustment?
Stepless micrometric adjustment is Eureka's grind-adjustment system, which offers near-infinite settings rather than fixed steps. It lets baristas dial in a grind with fine, repeatable precision, and is one of the features Eureka is best known for across both its home and commercial grinder ranges.
Are Eureka grinders good for home espresso?
Yes, Eureka grinders are well regarded for home espresso, especially the popular Mignon range. They are known for being quiet, consistent and durable, with precise grind adjustment. Eureka makes models across every price point, from home and prosumer grinders up to commercial café machines.
What is the difference between the Eureka Mignon and Helios ranges?
The Mignon range is designed for home and prosumer use, in a compact, quiet body. The Helios range is commercial, built for café volume with larger burrs, faster grinding and features such as burr-life tracking. Home baristas should look at the Mignon; cafés should look at the Helios.