Specs
| Burr | ZP6-derived with more aggressive pre-breaking fins and modified finishing teeth 0:00 |
| Dial | 8 µm per click, against 22 µm on a ZP6 0:00 |
| Speed | About 53 to 57 rpm with high torque, and a timed stop at 90 s 0:00 |
Starting settings
These are the settings each creator gave, measured from their own grinder's zero. Use them as a starting point.
| Method | Setting | Context | Confidence | By | Source |
|---|---|---|---|---|---|
| Pour-over | 6.0 | Matched to a ZP6 at 5.8 so both had a peak particle size near 920 µm | stated | Hedrick | 12:48 |
Cup profile
- Fuller, more vibrant and more complete than the ZP6, with no hollowness. It's slightly fuller than a Timemore 078, and a little more forgiving and tea-like than a Zerno with SSP multi-purpose burrs 0:00.
Strengths
- Compact, quiet and cordless, with very fine adjustment. Triple bearings and a short axle keep the alignment good 0:00 5:04.
Weaknesses
- Filter and fine AeroPress only, and slow for large batches 0:00.
Verdict
In 2026 Lance Hedrick called it the best value for filter if you don't want a hand grinder 0:00.
The Coffee Chronicler's take
- In 2026 he found it an easy daily grinder with high clarity and a calm, forgiving cup, near the top of what conical burrs can do. It's quiet with low retention, but a dose takes 50 to 60 s and the burrs aren't easy to swap. It costs about $500 18:10.
Sources
- Lance Hedrick: The $500 Grinder that Blew My Mind: Femobook A4z Full Review (2026-02-27)
- The Coffee Chronicler: Buying a pour over grinder? Here's what I'd do (2026-08-31)
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.
Notchbook is a free app that remembers the setting that worked on your Femobook A4Z for each coffee and brew method, and keeps a journal of every brew. Get it free on Google Play. The iPhone app is coming soon. More about Notchbook.