The two espresso grinders Sculptor 78s and Sculptor 64s from Timemore leave a very good impression in testing. In the video, we discuss both grinders in detail and present their respective strengths and weaknesses. Both Timemore Sculptor grinders are designed for Single Dosing.
>Summary upfront: Both deliver extremely reproducibly, with a very narrow main peak in the particle distribution – that's rare, especially in this price range.
We compared 10 Single Dosing grinders in the price range of 500 to 1000 euros. Learn more in our article on the topic.
Specialty Retailer Timemore Sculptor
We search for specialty partners whom we know provide good work and good service. We maintain close contact with the retailers. These are affiliate links. If you order through this link, it doesn't cost you any more, but we receive a small commission that we invest in new test equipment. For the Timemore Sculptor, we would recommend Die Röster.
Design & Build Quality
Although the 78S and 64S appear visually very similar, significant differences hide beneath the surface. The 78S is a true powerhouse, weighing 7.9 kilograms—almost twice as heavy as the 64S (3.8 kilograms). This discrepancy runs through all components, from the motor to the burrs to the lid. We find the massive base housing on both grinders to be of very high quality, as is the generously dimensioned start button.
The difference in construction is most apparent in motor power and acoustics. The 78S features a 400 watt motor and 78-millimeter burrs, while the 64S is equipped with a 150 watt motor and 64-millimeter burrs. Both grinders are similarly quiet (78S: 74.9 dB; 64S: 76.7 dB), but the sound quality is starkly different. The 78S sounds full and pulls the grinding process through in one go, reminiscent acoustically of an "electric car." The 64S, on the other hand, sounds more like a "children's lawn mower" or a "2001 Renault Clio." With dense, light roasts, the 64S audibly reaches its limits, while the 78S works effortlessly.
In fact, motorization correlates directly with grinding speed. The 78S grinds an impressive 21.6 grams in 10 seconds, which is considered fast in the home barista range. The 64S is significantly slower at just 12.4 grams in 10 seconds. The 78S is thus the uncompromising choice for baristas who grind extremely dense coffees and expect high torque.
The discrepancy in materiality unfortunately shows up in the peripheral devices, particularly in the dosing cup of the 64S. Although the grinding performance of the 64S is sensorially very good—a "toy that works well"—the build quality of the cup is weak. We criticize the glossy, sharp edge at the top here, as it's a messily cut metal tube that isn't even straight. This is an obvious sign of where compromises were made to maintain the lower price. However, both cups feature a useful magnetic function, which works very "smooth" on the heavier 78S.
Operation & Practical Usability
Single Dosing, as it should be: 18 g in, 18 g out – through all extractions. In our tests, there was practically no variation; one of the lowest retention measurements we've ever done!
Occasionally, with RDT, a bean can get stuck on the bean chute. Press start-stop again and these beans will come loose. The temperature rise during continuous extraction is minimal.
Speed and Volume (with Apas) from our measurement protocol:
- 78S: 21.6 g/10 s, ~14 s for 18 g, 74.9 dB
- 64S: 12.4 g/10 s, ~20.5 s for 18 g, 76.7 dB.
Prices at time of measurement: approx. 899 € (78S) or 699 € (64S).
The Dosing Cup: A Workflow Killer
The biggest shortcoming in the entire everyday workflow is the supplied dosing cup, which in our opinion is "not conducive to extraction." When the cup is placed directly into the portafilter, the cup's thick rim leaves a ring-shaped "Zermatt hill landscape" on the coffee puck when removed.
This uneven distribution at the edges promotes massive channeling, even when we used a precise WDT tool before tamping. We had to change our workflow as a result and strongly recommend users not to use the cup directly. You either have to transfer the coffee to a second cup and sieve it, or use a higher quality dispensing vessel to ensure homogeneous distribution in the portafilter. This avoidable detail undermines the otherwise perfect single-dosing workflow of the grinder and can increase overall costs through the need to purchase a replacement dosing cup.
Single-Dosing Perfection
The Sculptor models set new standards for single-dosing performance. The exchangeable retention is just 0.1 grams. This is by far the best value in our single-dosing comparison. We were able to consistently convert 18 grams of beans into 18 grams of ground coffee.
This success is due to the vertical burr arrangement and the straight, direct grinding path. Additionally, the grinders feature a "totally clever mechanism" at the discharge. By turning this wheel, residue and chaff are removed, effectively emptying the chamber and making a separate air blower unnecessary to achieve zero retention. Another factor enabling this low retention is the detected low static charge on the ground coffee. Low static prevents fine particles and coffee dust from adhering to the inner walls. Thus, the low temporary retention is the result of a interplay between mechanically optimal grinding path and minimized electrostatic adhesion.
Particle Distribution Measurement and Comparison
The Sculptor grinders are extremists when it comes to particle distribution. They deliver a ground coffee profile that is unique across our entire test field. The width of the main peak is extremely narrow: the 64S achieves 144 micrometers, the 78S 155 micrometers. These are among the lowest values we've ever measured in a grinder test. You could call the main peak a "tower" – a very precise collection of particles of equal size.
The Paradox of Fines
Such a narrow main peak is closely related to the fines content. Although the homogeneity of the main particles is very high, the fines content below 100 micrometers is around 30 percent.
Normally, a high fines content would lead to muddiness or grittiness. Here, however, the fines fulfill a different function: they create the necessary resistance (puck resistance) to pump pressure, since the extremely homogeneous main peak couldn't achieve this on its own. The high clarity we sensorially detected comes from the fact that the particles of the main peak are extracted almost perfectly, while the fines seal the pores of the coffee puck.
Sensorially, this results in a "very exciting blend" of clarity, complexity, and superb texture, since the fines can also contribute to the body. The particle distribution of the 64S is even minimally narrower (144 µm), which might explain the higher differentiation in espresso we detected in testing.
However, this profile forces the barista to grind very finely, making extraction behavior unpredictable: we often experience a very long pressure build-up (12 to 14 seconds), followed by rapid channeling. Using these grinders therefore requires precise puck preparation (WDT) and is best supported by advanced machine technology such as pressure or flow profiles.
- 78S: more differentiation and "juiciness," somewhat less body.
- 64S: somewhat fuller body, simpler finish.
In sum: very good espressos that make complexity visible and tasteable. The particle distribution of both grinders is outstanding, but also demanding. To brew with this narrow main peak, very fine grinding is necessary. This also means that puck preparation of the ground coffee must be perfect.
We recommend the grinder to demanding and advanced home baristas, ideally those who can run pressure or flow profiles on their espresso machine.
Rotation per Minute (RPM)
Both grinders have the option to adjust the speed of the burrs. This function is specified in RPM, English for Rotation per Minute. We seized this opportunity and performed some tests with different RPMs. We checked extraction, particle distribution, and taste.
The values in the particle distribution measurement don't differ significantly. At higher RPM of 1400 on the Timemore Sculptor 78s, we measured a slightly narrower main peak (10 microns) and slightly more fines (1.4%). Sensorially, this fit the picture, as extractions at higher RPM tasted clearer and rounder.
We conducted the sensory assessment of the grinders for espresso at the fastest RPM. Filter coffees tasted better to us at lower RPM. We will release another test report as a video on this.
Comparison in the 500–1000 € Field
The Timemore Sculptor S models position themselves as the "clarity extremists" in the single-dosing segment between 500 and 1000 euros. They provide a direct contrast to other dominant grinders on the market. The most obvious contrast is the Niche Zero, which with its conical burrs is designed for a wider main peak, few fines, and emphasis on sweetness and body. The Sculptor pursues the opposite goal: maximum clarity and complexity.
| Criterion | Timemore Sculptor S | Niche Zero (Conical) | DF Series (Flat, 64/83mm) |
|---|---|---|---|
| Burr Profile | Extremely narrow peak (144-155 µm) | Broad peak (approx. 255 µm) [1] | Medium to Narrow (depending on burr) |
| Taste | Clarity, complexity, juiciness [1] | Sweetness, body, balance [1] | Flexible, playable |
| Retention (Temporary) | Excellent (0.1 g) [1] | Very good (0.2 g) [1] | Good (0.3 g+) [1] |
| Volume | Quiet (~75 dB) [Image 1] | Very quiet (~72 dB) [1] | Medium to Loud (DF83V > 90 dB) [1] |
Due to their narrow ground coffee profile, the Sculptor grinders require much finer grinding than, for example, the Niche Zero to achieve the necessary resistance in the first place. This demanding extraction behavior, which often leads to a long stall, requires advanced handling of the espresso machine. The Sculptor models are therefore ideal for baristas willing to work with complex machines (pressure profiling, flow control) to fully exploit the potential of their extremely homogeneous particles.
Conclusion Timemore Sculptor 78s and 64s
The Timemore Sculptor 78S and 64S are technically outstanding devices that impressively demonstrate how mechanical precision can be used to minimize retention. They do "a lot right and well" in terms of single dosing. The strengths of the Sculptor series are undeniable: they deliver class-leading retention (0.1 g temporary), excellent grind consistency reproducibility, and an extremely narrow particle distribution that is unparalleled and enables maximum clarity in the cup. The weaknesses, however, lie in usability: the grind setting is somewhat fiddly to the touch on the 64s for precise fine-tuning, and the supplied dosing cup is a "workflow killer" that by its very design promotes channeling at the edges of the coffee puck. We clearly categorize the grinders as a nerd device for the advanced home barista. They are not for beginners looking for simple, forgiving operation.
- The Sculptor 78S: It's the uncompromising choice. The 400-watt motor delivers the necessary speed and robustness for dense roasts. Those who want maximum performance, speed, and robust construction should go for the 78S.
- The Sculptor 64S: It's the surprise in the cup. For less money, it delivers almost the same (minimally more differentiated) cup quality as the 78S. You only have to accept the lower speed (12.4 g/10s) and weaker motor. For those seeking the absolute maximum clarity in ground coffee and willing to replace the dosing cup and work focused, the 64S offers the most affordable entry into this high-end segment.
The Timemore Sculptor series proves that it's possible to construct single-dosing grinders with virtually zero retention, thereby setting a new, high standard for future devices in the high-end segment.
