Weber Workshops Key MK II – 83 mm Conical Single-Dose Grinder
Buy the Weber Workshops Key MK II in Switzerland: 83 mm Mazzer conical burrs, speed down to 30 RPM, Magic Tumbler. On display in Bern and Zurich.
The Key is the electric single-dose grinder from Weber Workshops. Its width is defined by the burrs and their carrier: an 83 mm conical burr set sits in a housing just 10.9 cm wide. According to Weber Workshops, the Mk.II brings significant improvements in operation and workflow on the same footprint as the first version. The Key was developed by the engineers and designers behind the iPod nano. Coffee Coaching Club is the official Swiss importer of Weber Workshops.
What is new in the Key MK II?
50 percent more torque
A new gearbox and a higher-current power supply deliver around 50 percent more torque than the predecessor. According to Weber Workshops, this lets the Mk.II grind even very light roasts at fine settings and the lowest speed (30 RPM).
Magnetic dust cover
A redesigned knurled cover sits on a loading chamber that is 30 percent larger, holding around 40 g. The two halves can be lifted apart or held magnetically above the chamber while you pour in the beans. Afterwards the cover drops back and keeps coffee fragments inside the chamber.
Interchangeable wood accents
On the Mk.II, the wood plate and brush handle are interchangeable. They come in oak from the factory and are available in walnut or teak as accessories.
Integrated Bean Feeder
The Bean Feeder is permanently built in and feeds the beans evenly throughout the entire grind, which is crucial for single dosing. A lower bearing holds the factory alignment without readjustment.
Revised Magic Tumbler
The Mk.II Magic Tumbler has antistatic plates and an additional, replaceable paper wiper. According to Weber Workshops, retention is well below 0.1 g, in tests below the range most coffee scales can measure.
The details in everyday use
83 mm Mazzer conical burrs
The burrs come from Mazzer and are aligned at the factory. Weber Workshops partially pre-ages them and seals the cutting edges with a food-safe TiN coating. They are rated for 5'000 kg of coffee.
Integrated cleaning brush
A solid oak handle, a solid brass ferrule that protects the bristles in the storage compartment, and a hidden magnet that holds the brush in place. The brush head unscrews and can be replaced on its own.
Magic Tumbler
The patented mechanism distributes the grounds automatically using the WDT principle. Without spilling, you transfer them directly into the portafilter, the Aeropress, the moka pot or the filter.
Grind size in 5 µm steps
The stepped adjustment takes you from Turkish-fine to the V60 setting.
For cleaning, the lower funnel is held by 12 magnets and comes off with a single twist. You remove the cone with the included key, and then both burrs are clean with the brush in seconds.
At a glance
| Burrs | 83 mm conical, Mazzer, factory-aligned, partially pre-aged, TiN-coated |
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| Rated for | 5'000 kg of coffee |
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| Speed | adjustable via knob, lowest setting 30 RPM |
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| Torque | around 50 % more than the Mk.1 (according to Weber Workshops) |
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| Grind adjustment | stepped, 5 µm per step, Turkish-fine to V60 |
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| Loading chamber | around 40 g, magnetic dust cover, integrated Bean Feeder |
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| Retention | well below 0.1 g with Magic Tumbler (according to Weber Workshops) |
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| Tumbler | Magic Tumbler for 58 mm included; Standard Tumbler (49 and 58 mm) with funnel sold separately |
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| Wood accents | oak from the factory, walnut or teak as accessories |
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| Power | 350 W max. |
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| Input voltage | 90–240 V, C13 power cable |
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| Dimensions (W × D × H) | 10.9 × 24.8 × 35.0 cm |
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| Weight | 9 kg |
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| Colours | black (Onyx), white (Snow) |
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| In the box | Key, Magic Tumbler with lid, C13 power cable, cleaning blower, RDT bottle, stainless steel dosing cup, hex key (according to Weber Workshops) |
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Who the Key MK II is made for
For anyone who doses single shots, has little space on the counter and wants a large conical burr set. The Key grinds for espresso as well as for filter. Nobody needs it. You want it or you don't.
If you prefer flat burrs, you will find the EG-1 in the Weber Workshops collection, the Lagom series at Option-O and the comparison on the page EG-1 vs. Lagom P80 vs. Lagom 01. For anyone who wants grinders that are affordable and precise: Varia, Comandante and Timemore. Not sure which to choose? Our advisory tool narrows down the options, and a free consultation appointment is also available. In the espresso machine and grinder comparison in Zurich, you test grinders side by side, an option, not a requirement.
What goes with it
Scales: affordable and precise from Normcore, with app and flow-rate display from Acaia. Tampers: the Normcore Spring-Loaded Tamper or, if you want more, the Weber Workshops Tamper from the tamper collection. For the machine to go with it: La Marzocco, Lelit or our full selection of espresso machines. The HG-2 hand grinder from Weber Workshops also uses 83 mm Mazzer conical burrs; according to Weber Workshops, the tumbler configurations are interchangeable between the Key and the HG-2.
Delivery in 2–4 business days, Switzerland and Liechtenstein. Click & Collect in Bern and Zurich. Financing available. We answer questions at [email protected] or by phone during business hours.
Frequently asked questions
How does the Key's conical burr set differ from a flat-burr grinder?
In our experience, conical burrs like those in the Key bring more aroma, and the larger the conical burr set, the more body – at 83 mm, the Key's burrs are among the large ones. Flat burrs like those in the EG-1 bring more clarity to the aromas. There is no better or worse here. Burr sets are like engines: subjective, with no objectively best one.
How low can the Key's speed be set?
You set the speed with a knob; according to Weber Workshops, the lowest setting is 30 RPM. The Mk.II has around 50 percent more torque than its predecessor and, according to Weber, grinds even very light roasts at fine settings and the lowest speed. Our rule of thumb: higher speed tends toward more body, lower speed toward more aroma.
Which portafilters does the Magic Tumbler fit?
The included Magic Tumbler fits 58 mm portafilters and distributes the grounds with a built-in wiper using the WDT principle. For 49 mm and 58 mm portafilters, Weber Workshops offers the Standard Tumbler with funnel separately. From the tumbler, you transfer the grounds into the portafilter, the Aeropress, the moka pot or the filter.
Do I need to assemble anything on delivery?
The Key arrives with the Magic Tumbler inserted, but the WDT wiper is not yet fitted. According to Weber Workshops, you need the included 5 mm hex key, the enclosed stainless steel washer and just under five minutes.
Is the Key MK II also available as a showroom unit?
Occasionally we offer a display unit from the showroom as a separate variant. You can ask about its exact condition at [email protected].
Can I see the Key MK II before buying?
Our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b) show a wide selection, but not every model is set up at all times. Write to us before your visit at [email protected]. If you would like to test several grinders side by side, book the espresso machine and grinder comparison in the Zurich showroom.
Tip from the roastery: For dense, full-bodied espresso from the Key, we recommend Cozy Chocolate and Nutty Delight. For maximum body without acidity: Very Nutty. If you are looking for a fruity addition, Wild Peach lets you discover a light roast with a peach note. That is our recommendation, one of many.
