Specs
| Dial | Each division is 5 µm of vertical burr travel, and a pin stops the disc slipping 1:37 |
| Zero | At low rpm, go finer past the rubbing noise of the carrier pads until the burr carrier starts to resist. That's true zero 1:37 28:14 |
| RPM | 500 to about 1800 1:37. Another review gives a minimum of 50 2:00 |
| Burrs | Stock Weber burrs, plus SSP ULF, HU, Low Uniformity, 804-style, Lab Sweet-style and others 1:37 |
Where sources disagree
The creators don't all give the same figure here, so every value is listed with the person who gave it.
| Field | Value | By | Source | Note |
|---|---|---|---|---|
| Adjustment | stepless (5 µm divisions) | Hedrick | 1:37 | |
| Adjustment | stepped | Quan | 4:25 | 5 µm steps |
| Adjustment | summary | Lance Hedrick describes 5 µm divisions held by a pin, so it's listed as stepless. Brian Quan calls it stepped, and James Hoffmann also mentions locking steps. |
Starting settings
Lance Hedrick gives no grind numbers. Brian Quan's and Bluebird's figures are on their own grinders, and Bluebird mostly quotes microns. With ULF burrs, espresso needs a far finer setting than with other burrs 28:14.
| Method | Setting | Context | Confidence | By | Source |
|---|---|---|---|---|---|
| Espresso | about 600 RPM (grind step not given) | His usual speed for daily use | approx | Hoffmann | 2:32 |
| Espresso | 6 | His espresso setting with Core burrs at 500 to 600 rpm | stated | Quan | 6:10 |
| Pour-over | one full rotation coarser than his espresso setting of 6 | His pour-over setting | stated | Quan | 6:10 |
| Pour-over | about 1.5 (he wasn't sure) | The café's grinder, aiming for 918 µm for 20 g in 300 g on a flat-bottom brewer | unclear | Bluebird | 6:11 |
| Pour-over | 910 µm (dial number not given) | 15 g in 225 g, plastic V60, three pours, light Sidra | stated | Bluebird | 3:33 |
| Pour-over | 914 µm (dial number not given) | 14 g in 200 g, small V60 at 92 °C, natural Ethiopian | stated | Bluebird | 2:01 |
| Pour-over | 750 µm (dial number not given), a bit finer than for other Panama Geishas | 13 g in 200 g, V60, finished at about 2:10 | stated | Bluebird | 4:08 |
Cup profile
- ULF burrs are very clear and sparkling, with separated flavours, low fines and less body 1:37 12:40.
- The stock Weber burrs give a conical-like body and a velvety mouthfeel with decent clarity 1:37.
- 2025: ULF sits in the balanced middle ground between a Timemore 078 and 64 mm multi-purpose burrs 3:34.
Strengths
- Excellent alignment by design, very low retention without bellows, and lots of 80 mm burr options 1:37 21:42.
Weaknesses
- Very expensive, and it can stall on very light roasts at low rpm 1:37.
Verdict
2023: Lance Hedrick's favourite grinder so far, especially for filter 1:37. 2024: grade A and the most enjoyable grinder he has used 12:02. With ULF burrs it's one of his top three filter set-ups 16:21. 2025: only a few percent ahead of a Pietro or Timemore 078, and not worth the money to him 3:34.
James Hoffmann's take
- 2021: the only grinder in his showdown with locking steps. The hybrid Core burr gave sweet, clean, balanced espresso. He ran it at about 600 rpm and said the 1800 maximum is probably faster than you'd want. There's static and chaff unless you spray the beans with water 0:00 2:32 4:33.
- His personal pick of five high-end grinders for a mix of espresso and filter, with essentially no retention and no ritual needed 21:15. In 2024 he still called the Core burr his gold standard for one burr set that does both 8:42.
Brian Quan's take
- 2022: the grinder he'd keep if he could only have one. The Core burrs are a balanced, syrupy all-rounder, more blended than 98 mm SSP and forgiving if you grind too fine, but they can't do turbo shots under 15 s. The 5 µm steps are easy to keep track of. The motor feels underpowered, so light roasts need a hot start and a slow feed. The rpm ring is awkward, there's no auto-purge and it takes up a lot of space 4:25.
Bluebird Coffee Roastery's take
- 2025 unboxing: bought with the Ultra (ultra-low-fines) burrs to replace the café's EK43s. He rates it the best single-dose filter grinder and expects a big step up in quality. It isn't built for espresso, though they planned to try turbo shots. The hopper and parts are held by magnets, and an RDT brush and a service kit come in the box. Very expensive 4:02.
- From 2026 their recipes give the grind in microns measured on the EG-1 (roughly 750 to 918 µm for pour-over), with a published guide that converts the figure for other grinders. The dial number is rarely given 3:33 2:01.
Notes
- With the stock burrs, extraction rose about 1.5 points going from 500 to 1500 rpm with the grind reset. Other burrs showed little effect from speed 9:39. Lance Hedrick runs it at 500 rpm without a strong reason 31:46.
Sources
- James Hoffmann: The Weber EG-1 (Episode #2) (2021-01-26)
- James Hoffmann: The Ultimate Grinder Showdown Finale (Episode #6) (2021-01-30)
- Brian Quan: Titan Battle: EG-1 vs. P100 (2022-09-28)
- Lance Hedrick: THE GREAT BURR BATTLE: Demythologizing the Conical vs Flat Debate (2023-05-02)
- Lance Hedrick: GRINDER REVIEW: Timemore 078/064, DF83v, DF64 Gen 2, Gevi Grindmaster, DF64v (2024-03-08)
- James Hoffmann: The Niche Duo Review (2024-03-08)
- Lance Hedrick: Grinder Tier List (2024-09-10)
- Lance Hedrick: MY FAVORITE GRINDER (so far...): Review of Weber Workshops EG1 V3 (2023-01-19)
- Lance Hedrick: Can Handgrinders Beat Electric? The Ultimate Battle, Filter Edition (2025-04-10)
- Bluebird Coffee Roastery: UNBOXING OUR NEW WEBER EG-1 (2025-10-03)
- Bluebird Coffee Roastery: Brew With Us || Abu Coffee Natural Geisha || Best of Bluebird April 2026 (2026-04-07)
- Bluebird Coffee Roastery: Brew With Us || Rwanda Vunga Natural || April 2026 Subscription (2026-04-07)
- Bluebird Coffee Roastery: BREW GUIDE || Ethiopia Tibebu Roba Natural, V60 (2026-04-13)
- Bluebird Coffee Roastery: Cafe Granja La Esperanza Las Margaritas Sidra || June Best of Bluebird (2026-06-10)
Summarised in our own words from the creators' videos, with every point linked to the moment it comes from. Notchbook isn't affiliated with or endorsed by any of these creators, so please watch the originals for full context. Sources
Dialling in from here
- Sour, thin or fast? Grind finer. Why coffee tastes sour
- Bitter, dry or slow? Grind coarser. Why coffee tastes bitter
- Espresso: how to dial in. Filter: pour-over grind size.
Compare with other grinders in the grind size chart, or see every grinder.
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