1Zpresso JX: The Hand Grinder That Made Me Retire My Electric

I bought the 1Zpresso JX expecting a decent travel grinder. I didn't expect it to become my go-to grinder for everything except espresso. At around $100-130, this Taiwanese-made hand grinder sits in a price range where most competitors offer either cheap build quality or mediocre grind performance. The JX delivers both solid build and impressive grind quality, which is why it keeps showing up on recommendation lists everywhere.

Here's the full rundown on the JX after months of daily use, including where it truly excels, where it doesn't, and how it stacks up against both cheaper and more expensive alternatives.

Build Quality and First Impressions

The first thing you notice when you unbox the JX is the weight. At about 620 grams (1.37 pounds), it feels substantial in your hand. The body is a thick aluminum tube with a textured grip section. The internal structure is all stainless steel. Nothing wobbles, rattles, or feels cheap.

The handle is a curved metal arm with a wooden knob that folds in for storage. It's longer than the handles on most competing hand grinders (Timemore C2, Hario Skerton), which gives you better mechanical advantage when cranking. This matters more than people think, because a longer handle means less effort per rotation.

The 48mm Steel Burrs

Here's the spec that sets the JX apart: 48mm stainless steel conical burrs. That's larger than anything else in this price range. The Timemore C2 has 38mm burrs. The Hario Skerton Pro has 38mm ceramic burrs. Bigger burrs mean faster grinding and more uniform particle sizes, and the JX takes full advantage.

The burrs are precision-machined with a sharp, aggressive cutting geometry that chews through beans quickly. Light roast Ethiopian naturals, which are notoriously hard and dense, still grind in about 30-35 seconds for a 20-gram dose. Softer medium roasts clear in 20-25 seconds. That's fast for a hand grinder.

Grind Quality Across Brew Methods

Pour-Over (V60, Kalita, Chemex)

This is the JX's sweet spot. The medium-fine grind particles are uniform and consistent, producing clean, sweet cups with good clarity. I've brewed V60s with the JX and my Eureka Mignon Specialita side by side, and the difference in cup quality is smaller than the $300 price gap between them would suggest.

Drawdown times are repeatable. If I grind at the same setting with the same coffee, my V60 drawdown lands within a 10-second window every time. That kind of consistency means I can actually dial in a recipe and trust that it'll work the next morning without re-adjusting.

French Press and Cold Brew

At coarser settings, the JX produces a clean, even grind with fewer fines than smaller-burr grinders. French press cups have minimal sludge at the bottom, and the body is full without being muddy. For cold brew, the coarse grind is consistent enough to produce a smooth, sweet concentrate.

AeroPress

The JX is practically made for AeroPress. The medium-fine to medium range (where most AeroPress recipes live) is the grinder's strongest zone. I use it at about 24-26 clicks for standard AeroPress recipes and 20-22 for inverted/longer steep methods.

Drip / Batch Brew

If you're grinding for a drip machine or batch brewer, the JX handles it well, though you're limited by the hopper capacity. The bean chamber holds about 30-35 grams, which is one serving. If you're making a full 8-cup pot, you'll need to grind in batches. This is the one scenario where an electric grinder has a clear practical advantage.

The Adjustment System

1Zpresso uses an external adjustment dial on the JX, which sits below the bean chamber. You turn the dial and feel distinct clicks. Each click represents a fixed grind size step.

The JX has about 40 usable clicks across its range, with each click producing a visible and tasteable difference in grind size. The system is precise and repeatable. I can spin the dial to any number, grind, and get the same result I got last time at that setting.

The Espresso Question

And here's the honest truth: the JX is not great for espresso. The click resolution in the fine range is too coarse. The step between "acceptable espresso" and "too fine" is a single click, and that one click can mean a 5-8 second difference in shot time. For espresso, you want the JX-Pro, which has a finer adjustment resolution specifically designed for the espresso range. The Pro costs about $50-60 more, and if espresso is part of your routine, it's worth every penny.

If you're exploring grinders for different purposes, the best coffee grinder roundup breaks down which models work best for each brew method.

Daily Workflow

My morning routine with the JX takes about 90 seconds total:

Open the bean bag. Weigh 17 grams for a V60 into the hopper. Twist the adjustment dial to my saved setting (I keep it at click 24 for most medium roasts). Crank for about 25-30 seconds. Tap the grinder gently to knock any stuck grounds loose. Transfer the grounds to my V60. Done.

The magnetic catch cup at the bottom of the grinder pops off cleanly. Grounds transfer easily without spilling. I appreciate that 1Zpresso designed the cup wide enough that you can pour directly into a V60, portafilter, or AeroPress without using an intermediate container.

Retention

The JX retains about 0.1-0.2 grams between grinds, which is almost nothing. What you put in is effectively what you get out. For single dosing, this is ideal. No purging, no wasted beans, no stale grounds mixing into your fresh dose.

JX vs. The Competition

JX vs. Timemore Chestnut C2 (~$65)

The C2 is a great value, but the JX is a meaningful step up. The 48mm burrs grind faster and produce more uniform particles than the C2's 38mm burrs. The external adjustment dial is more convenient than the C2's internal adjustment. The build quality feels more premium. If you can stretch your budget from $65 to $120, the JX is worth the difference.

JX vs. Commandante C40 (~$250)

The Comandante has slightly better grind quality (the Red Clix burrs are excellent) and a more refined aesthetic. But it costs double the JX and uses smaller 39mm burrs that grind slower. For a pure performance-per-dollar analysis, the JX wins easily. The Comandante wins on aesthetics and brand prestige.

JX vs. Kinu M47 (~$280)

The M47 has superior build quality (all stainless steel, heavier, more precise adjustment) and better espresso performance. For filter coffee, the difference in cup quality is small. If espresso is part of your routine, the M47 pulls ahead. For filter-only users, the JX gives you 85% of the M47's performance at less than half the price.

JX vs. Baratza Encore (~$170, electric)

Different category entirely. The Encore is convenient, press a button and walk away. The JX produces a significantly better grind. If you're willing to spend 30 seconds cranking, the JX will make a tastier cup of coffee than the Encore at a lower price. If manual effort is a dealbreaker, the Encore is fine. Check the top coffee grinder list if you want to compare manual and electric options directly.

Frequently Asked Questions

What's the difference between the JX, JX-Pro, and JX-S?

The JX is the filter/all-purpose model. The JX-Pro adds finer click resolution for espresso. The JX-S uses a different burr geometry designed for filter coffee that produces a different (some say sweeter) flavor profile. All three share the same body and build quality. Choose based on your primary brew method.

Can I take the JX on a plane?

Yes. There's nothing in it that raises TSA concerns. I've flown with mine in both carry-on and checked luggage without issues. The folding handle and included carrying case make it travel-ready.

How do I clean the 1Zpresso JX?

Remove the outer burr by twisting it off (it lifts out easily). Brush both burrs and the burr chamber with the included bristle brush. Blow out any trapped fines. Reassemble. Takes about 5 minutes. I do this weekly and haven't had any buildup issues.

How long will the burrs last?

1Zpresso rates their stainless steel burrs for many years of daily home use. The exact lifespan depends on how much you grind and what type of beans (light roasts are harder on burrs than dark roasts). Realistically, you won't need replacement burrs for 5+ years of typical home use.

The Bottom Line

The 1Zpresso JX hits a performance-to-price ratio that's hard to argue with. The 48mm burrs deliver grind quality that competes with electric grinders at double the price. The build is solid and durable. The workflow is fast and simple for filter brewing. Just don't buy it expecting it to handle espresso, because that's not what the standard JX was designed for. For pour-over, AeroPress, French press, and drip, it's one of the best values in the grinder market right now.