The Weber Workshops EG-1 Mk.3 is an 80mm flat burr single-dose grinder built for advanced home baristas and specialty-focused small cafés who need a tool that performs across every brewing method without compromise. Its 5-micron stepped adjustment ring lets you move between espresso and filter with scalpel-like precision, and because retention sits below 0.1g, you can switch coffees between doses without cleaning or dialing in from scratch. For anyone who rotates between roasters, brew methods, or both, that alone changes the daily workflow. What sets the EG-1 apart from other grinders at this level is its variable RPM. Weber Workshops introduced this technology in 2015: the first grinder in the industry to offer it, and the Mk.3 refines it further with a PID controller that senses bean density in real time and throttles the motor to hit your target speed consistently. Grind faster for darker roasts, slower for delicate light roasts, and let the machine adapt rather than fight it. The Mk.3 also adds a dedicated Purge button that reverses the burrs before a max-speed burst, clearing leftover grounds and dislodging anything that shouldn't be in there. Paired with the included Blind Shaker for static-free dosing, it's a complete, thoughtfully engineered system. Key Features 80mm flat burrs: Large cutting surface produces a unimodal particle distribution for exceptional clarity and consistency across all brew methods Variable RPM (100–1,500): PID-controlled motor adjusts in real time to bean density — the first grinder in the industry to offer this, now in its third generation 5-micron stepped adjustment: Precise, tactile grind adjustment from Turkish-fine to coarse filter without tools or recalibration Near-zero retention: Sub-0.1g retention means you can switch coffees between doses without purging or wasting beans Magnetic burr mounting: CORE and ULTRA burr sets swap in under two minutes, no tools required — no screw holes to collect old coffee Purge button (new in Mk.3): Reverses burrs, then bursts to max speed to clear leftover grounds or dislodged debris; also provides a temporary max burst mid-grind Blind Shaker included: Reduces static and channeling, and increases extraction yield — color-matched to the unit Tool-free cleaning: Magnetically sealed grind chamber opens easily for fast daily maintenance. Ideal For The EG-1 Mk. 3 is for advanced home baristas who have mastered the fundamentals and are ready for a grinder that will never be the limiting factor in their setup. If you're splitting hairs over extraction yield, chasing unimodal distributions, or experimenting with turbo shots and blooming espresso, this is your grinder. It's also ideal for multi-brew households where one person pulls espresso in the morning, and another brews V60 in the afternoon. The magnetic burr swap system makes it effortless to switch brew methods without recalibrating your entire workflow. This is not a beginner grinder. It's a lifetime grinder.
