Timemore S3 Review

Grind Quality

The S3 runs 42mm conical S2C (S2C890) stainless steel burrs, factory-aligned to a 0.075mm gap at zero — narrower than a human hair, per Timemore.

The burr geometry is engineered to suppress fines in the 200–250μm band and push the particle distribution toward 250–400μm with a peak around 375μm, which the brand claims boosts body and sweetness.

In practice, the reviews line up with the marketing more than usual. The r/pourover tester called grind uniformity "10/10" on pour-over settings, and Pull & Pour described the cup as "cleaner and more balanced" than what you get from smaller-burr hand grinders like the Timemore C3s.

Where the S3 stumbles is the bottom of the range. Our months-long test concluded the grinder "does not grind fine enough for espresso out of the box," and Timemore itself has since acknowledged this by releasing the separate S3 ESP with espresso-specific burrs.

If you brew espresso on a regular basis, treat the standard S3 as a pour-over-first grinder that can stumble into espresso territory with effort. For filter coffee — V60, Kalita, Aeropress, French press — it sits in the top tier of hand grinders available today.

Build Quality

The S3 is a full-metal unibody in aluminum alloy with a textured exterior for grip. At 530g it's hefty for a hand grinder, but reviewers consistently describe that weight as reassurance rather than a problem. The bottom isn't magnetic; it threads on and off, with a silicone base that keeps the grinder planted during cranking.

The spring-assisted folding handle is the most-quoted design touch. It folds flush against the body so the grinder won't tip over in a bag or on a crowded shelf. Pull & Pour called the overall feel "premium without breaking the bank," and the 4.4-star average across 400+ Amazon ratings backs that up.

One real concern i would like to flag, is the external adjustment ring as easy to bump out of position because it doesn't audibly click into place. On a grinder this size, an accidental grind-size change mid-session is more than a minor annoyance — it's a workflow killer.

Workflow in Daily Use

Single-dose is the obvious fit. The 25g hopper capacity matches a typical V60 or batch brew, and the external 0–9 dial with 10 micro-clicks per number (100 settings total, 0.015mm per click) means you can dial in without unscrewing the burr carrier. That's a meaningful quality-of-life upgrade over the internal-adjust Timemore C3 Pro.

Grind speed is fast for the class. Our testing reported 15g in 15–20 seconds on a pour-over setting, and our S3 ESP review (same body, similar burrs) measured 18g of espresso in 45–50 seconds. For a 42mm hand grinder, that's competitive.

Static is the one real workflow issue. Timemore doesn't claim anti-static engineering on this model. We had to use RDT (Ross Droplet Technique) to control static cling around the catch cup. Expect to spritz your beans. At this price, that's a small but real miss.

Who It's For

Pour-over and filter-coffee specialists who want a hand grinder they can stop upgrading. The S3 delivers cup quality that genuinely competes with electric grinders in the same brew range, and the external adjustment makes daily dialing painless.

Espresso-only drinkers should look at the S3 ESP instead, or at flat-burr alternatives. Anyone who can live with a smaller burr set and a much lower price — the Timemore C5 Pro covers a similar adjustment range for a fraction of the cost, with the trade-off of grind consistency at the top end.

Value

At $159–$200, the S3 is the most expensive hand grinder Timemore sells outside the Sculptor line. You're paying for 42mm burrs, a full-metal body, and an external adjustment system — all of which are real upgrades, not cosmetic.

Against the 1Zpresso K-Ultra and Comandante C40, the S3 lands at a noticeably lower price for comparable (sometimes better, per the pull-and-pour review) pour-over results.

That said, "premium pricing" is the legitimate knock. The C3 Pro and C5 Pro cover 80% of this grinder's capability for substantially less money. The S3 is worth the premium if cup clarity matters more than budget — if it doesn't, the diminishing returns are real.