Mechanical Coffee Instruments
Sou Sik
Precision hand grinders built for feel.
P-1 brings a planetary gear drive, replaceable burrs, and low-retention construction into one tactile hand grinder. It does not merely process beans—it turns grinding into a measured mechanical rhythm.
Design Philosophy
We do not just make grinders. We build a connection between mechanics and coffee.
Gears, burrs, grip, resistance, and sound are not details to hide. They are the experience you feel every day. P-1 is our first answer to a simple idea: a hand grinder should be easier, steadier, and more enjoyable to use.
P-1 Highlights
Designed for light roasts, daily brewing, and tactile control.
Planetary Gear
A planetary gear system multiplies torque, making dense light-roast beans smoother to grind with less wrist strain.
53mm Burr System
Large conical burrs balance throughput and particle-size stability across pour-over and espresso exploration.
Low Retention
A low-retention, easy-clean structure keeps each brew cleaner, more predictable, and easier to maintain.
Precision
Let the structure speak, and the feel linger.
The planetary gear system makes resistance more controllable. Replaceable 440C stainless-steel burrs open up different brewing profiles without losing the familiarity of one daily tool.
View productJournal
Coffee knowledge and grinding notes
How to tell if a grinder suits light roasts
Evaluate grinders through torque, burr geometry, particle distribution, and feel.
Why planetary gears reduce effort
A clear introduction to the mechanical core of P-1.
Daily maintenance for hand grinders
Disassembly, cleaning, and preventing stale-ground odors.
Community & Press