Specs
| Type | Hand grinder, seven-spoke filter burr similar to the ZP6 29:43 |
| Build | External clicks, a burr fixed to the axle and three bearings. The quarter-turn knob can loosen in your hand 29:43 |
| Measured PSD | D50 about 937 µm, with the widest boulder tail of the three Lance Hedrick measured (D90 about 1690 µm) 17:58 |
Starting settings
No one has shared grind settings for it yet.
Cup profile
- Sometimes hollow, with under-ripe acidity as it cools. At its best it was Lance Hedrick's favourite in the blind test 29:43.
- More tea-like than a K-Ultra or Comandante, and less balanced than the ZP6 29:43.
Strengths
- Cheap for the quality, and he preferred it for filter over heptagonal burrs 29:43.
Weaknesses
- The hardest of the group to turn 29:43.
- A bigger boulder tail, which lined up with the hollow cups 18:29.
Verdict
In 2026 Lance Hedrick called it a fine grinder. It isn't at ZP6 level, but now and then it beats it 29:43.
Sources
- Lance Hedrick: ZP6 Dethroned?: Millab 01 x Kingrinder K7 x 1Zpresso ZP6 (2026-02-13)
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 Kingrinder K7 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.