Specs
| Burr | Large hexagonal cone with horizontal cuts that turn diagonal 12:17 |
| Microns per step | 83 µm per click on the macro stage and 16 µm per click on the micro stage 12:17 |
Starting settings
There are no grind numbers from the reviews yet. The figures below come from readers of The Coffee Chronicler's grind chart.
| Method | Setting | Context | Confidence | By | Source |
|---|---|---|---|---|---|
| Immersion | 19 to 23 | 2021 chart, macro dial from 1 to 23 with the micro dial at 0 or −1. Reader-submitted and approximate | approx | Christensen | grind size chart |
| Pour-over | 15 to 19 | 2021 chart, macro dial from 1 to 23 with the micro dial at 0 or −1. Reader-submitted and approximate | approx | Christensen | grind size chart |
| AeroPress | 11 to 15 | 2021 chart, macro dial from 1 to 23 with the micro dial at 0 or −1. Reader-submitted and approximate | approx | Christensen | grind size chart |
| Moka | 9 to 11 | 2021 chart, macro dial from 1 to 23 with the micro dial at 0 or −1. Reader-submitted and approximate | approx | Christensen | grind size chart |
| Espresso | 5 to 7 | 2021 chart, macro dial from 1 to 23 with the micro dial at 0 or −1. Reader-submitted and approximate | approx | Christensen | grind size chart |
Cup profile
- Lots of fines. That's workable for espresso, but Lance Hedrick didn't like it for filter 12:17.
Strengths
- Comfortable square body, and the catch cup is magnetic and threaded 12:17.
Weaknesses
- The particle spread isn't good for filter 12:17.
Verdict
2022: nicely built, but the burr isn't a favourite 12:17. 2024: great build, mediocre cups, grade B 22:06.
James Hoffmann's take
- He tested the earlier Timemore Chestnut with the wooden base in 2019. It was fast and fine for filter, but one step changed the espresso flow too much to dial in, so he didn't recommend it for espresso 11:18 13:21.
Sources
- James Hoffmann: The Ultimate Hand Grinder Showdown (2019-04-23)
- Lance Hedrick: GUIDE TO HANDGRINDERS: Watch Before Buying (2022-06-15)
- Lance Hedrick: Hand Grinder Tier List (2024-10-02)
- Asser Christensen, The Coffee Chronicler (website): Grind Size Chart & Database (2025-08-29)
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 Timemore Chestnut X 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.