ROK GrinderGC
- Grind range
- 0–815 µm
- Per click
- ≈32.6 µm
- Adjustment
- 25 clicks
- Brew methods
- 8
At its coarsest it reaches about 815 µm, so French Press and Cold Brew sit partly beyond its range.
Settings by brew method
| Brew method | Grind descriptor | Grind size | Clicks |
|---|---|---|---|
| Espresso | Fine | 200–300 µm | 1-6 |
| Moka Pot | Fine-medium | 300–400 µm | 6-14 |
| AeroPress | Medium-fine | 400–700 µm | 5-23 |
| Pour Over (V60) | Medium-fine | 450–650 µm | 8-15 |
| Siphon | Medium | 500–700 µm | 7-18 |
| Drip / Batch | Medium | 600–800 µm | 5-21 |
| French Press | Coarse | 900–1200 µm | 16-25 |
| Cold Brew | Extra coarse | 1000–1400 µm | 19-25 |
About the ROK GrinderGC
The ROK GrinderGC is a manual hand grinder with stepped adjustment. At its coarsest it reaches about 815 µm, so French Press and Cold Brew sit partly beyond its range. Each click moves the grind by roughly 32.6 µm.
ROK GrinderGC — frequently asked questions
Is the ROK GrinderGC a manual or electric grinder?
The ROK GrinderGC is a manual hand grinder.
What grind setting should I use for Espresso on the ROK GrinderGC?
For espresso on the ROK GrinderGC, start around 1-6 clicks — roughly 200–300 µm — then adjust to taste.
How much does each click change the grind on the ROK GrinderGC?
Each click on the ROK GrinderGC changes the grind by about 32.6 microns, so you can dial in small steps.
What grind sizes can the ROK GrinderGC produce?
The ROK GrinderGC grinds from about 0 to 815 µm, covering 8 of the brew methods we chart.
Can I copy grind settings from another grinder to the ROK GrinderGC?
Not directly — every grinder's scale is arbitrary, so a number that works on one model won't match the ROK GrinderGC. Match the micron range instead, using the chart above.