Which to buy · Every setting
1Zpresso JX-Pro vs Comandante C40 MK3
Two hand grinders cross-shopped at the same money. The C40 MK3 counts 50 clicks; the JX-Pro counts 200 clicks.
Which to buy
Choose the
JX-Pro if you…
- want to adjust from the top: 40 clicks a turn, 12.5 microns each
- pull espresso as well as pour over — 1Zpresso rates it for both
Choose the
C40 MK3 if you…
- want Comandante's Nitro Blade burrs, of high-nitrogen martensitic steel
- want two bean jars, one glass and one polymer
- may want finer espresso steps later — Comandante sells a Red Clix drivetrain for the C40
Shop links are affiliate links: BrewMark earns a commission if you buy through one, at no extra cost to you. The verdicts were written without regard to it.
Comandante's C40 shop lists only the MK4 and Lab Series now, not the MK3. The MK3 and MK4 both use the Nitro Blade burr. 1Zpresso's JX-Pro page now shows the JX-Pro S as out of stock and unavailable, while its J series page still lists the JX-Pro.
Sources: Comandante — C40 grinders · Comandante — C40 MK4 · Comandante — C40 (archived) · Comandante — FAQ · Comandante — Red Clix · 1Zpresso — J series
| JX-Pro | C40 MK3 | |
|---|---|---|
| Brand | 1Zpresso | Comandante |
| Scale | Clicks | Clicks |
| Dial range | 0 clicks – 200 clicks | 0 clicks – 50 clicks |
| Burrs | Conical | Conical |
| Espresso → filter | 108.4 clicks | 18 clicks |
| Filter → coarse | 51.8 clicks | 14 clicks |
The same number means different things
Both grinders use a clicks, which makes it tempting to copy a number straight across. Setting 25 clicks sits at grind index 0 on the JX-Pro but 32.8 on the C40 MK3 — far enough apart to change the cup.
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| JX-Pro | C40 MK3 |
|---|---|
| 40 clicks | 10 clicks |
| 73 clicks | 13 clicks |
| 101 clicks | 17 clicks |
| 121 clicks | 21 clicks |
| 137 clicks | 25 clicks |
| 151 clicks | 29 clicks |
| 163 clicks | 31 clicks |
| 173 clicks | 32 clicks |
| 181 clicks | 33 clicks |
| 188 clicks | 35 clicks |
| 192 clicks | 37 clicks |
| 196 clicks | 40 clicks |
| 200 clicks | 42 clicks |
| C40 MK3 | JX-Pro |
|---|---|
| 10 clicks | 40 clicks |
| 13 clicks | 73 clicks |
| 17 clicks | 101 clicks |
| 21 clicks | 121 clicks |
| 25 clicks | 137 clicks |
| 29 clicks | 151 clicks |
| 31 clicks | 163 clicks |
| 32 clicks | 173 clicks |
| 33 clicks | 181 clicks |
| 35 clicks | 188 clicks |
| 37 clicks | 192 clicks |
| 40 clicks | 196 clicks |
| 42 clicks | 200 clicks |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | JX-Pro | C40 MK3 |
|---|---|---|
| Espresso | 59 clicks | 12 clicks |
| Moka pot | 96 clicks | 16 clicks |
| AeroPress (short steep) | 120 clicks | 21 clicks |
| Pour over — V60 / cone | 145 clicks | 27 clicks |
| Siphon | 151 clicks | 29 clicks |
| Pour over — flat bottom | 156 clicks | 30 clicks |
| Steep and release — Clever / Switch | 160 clicks | 30 clicks |
| Drip / batch brew | 120 clicks | 31 clicks |
| Cupping | 165 clicks | 31 clicks |
| Chemex | 172 clicks | 32 clicks |
| French press | 186 clicks | 35 clicks |
| Cold brew | 194 clicks | 39 clicks |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
1Zpresso JX-Pro
Comandante C40 MK3
Dialing in the JX-Pro
External adjustment makes this the easiest hand grinder to actually dial, because you can count clicks without disassembling anything. Its filter range is generous, which is a mixed blessing — small click changes do less than you expect at the coarse end and more than you expect near espresso. Move in larger jumps for French press, single clicks for anything under filter.
Dialing in the C40 MK3
Mechanically close to the MK4 and dialled almost identically — the MK4 changed the axle and bearing rather than the grind geometry. Recipes quoting MK4 clicks transfer to the MK3 essentially unchanged.