Knock Aergrind 2021 Hand Grinder

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  • What's in the Box

  • Knock Aergrind Grinder
  • Silicone Sleeve
  • Silicone Holster For Grinder Handle
  • Spare O-Rings
Knock Aergrind

Built To Travel

The Aergrind, made by Knock, is a compact, travel-friendly grinder with sacrificing performance in terms of grind quality. Using the same, custom-treated burrs as it's bigger brother, the Feldgrind, the Aergrind makes brewing the same great coffee you brew at home just as accessible when you're on the road. With burrs that last up to 85% longer than standard steel burrs and a wide range of grind sizes, the Aergrind is the perfect coffee grinder for the traveler and the explorer.

Aergrind Adjustment Dial

For All Brewing Methods

Designed to be even more compact and travel-friendly than its predecessor, the Feldgrind, the Aergrind features the same 38 mm coated steel conical burrs and stepless adjustment. Now, however, those burrs sit inside dual bearing mounts in a unibody milled aluminum casing. As before, grind adjustment is stepless and built into the upper portion of the burr shaft. Holding the lid in place, you can change your setting by rotating the handle, with a cutout indicating the number on the lid's dial for reference. In total we find the ideal grind range is covered by the first 5 revolutions of adjustment, with each revolution translating to about 0.7 mm of vertical travel between the burrs. Espresso, drip, and even french press grinds are accessible, however the smaller volume of the hopper and grinds catch make the Aergrind better suited to smaller doses and single cup brews.

Aergrind & the Aeropress

Thoughtfully Designed

The Aergrind is purposefully designed to fit inside the plunger of an Aeropress coffee maker, making for a compact travel coffee setup. The hopper holds about 20-25 grams of beans, and the grinds catch holds about 25-40 grams at a drip grind (3-4 revolutions). For cleaning, we recommend wiping down parts with a soft, damp cloth and drying thoroughly, and cleaning the burrs using a pipe cleaner or similarly soft-bristled brush.


    Comapct & Travel-Friendly


    Espresso to French Press Range


    Stepless Grind Adjustment


    38mm Coated Steel Conical Burrs

More Features

Detachable Handle with Holster

20-25 gram Hopper Capacity

Single Piece, Precision Machined Body

Fits Perfectly Inside the Aeropress


Manufacturer: Knock
Model: Aergrind
Burrs: Conical
Burr Size 38mm
Grind Adjustment: Stepless
Hopper Capacity: 20-25g
Grinds Container Capacity: 25-40g
Dimensions: 5.7" (H) x 1.8" (D)
Weight: 13.4 oz

Suggested Resources

  • A Comparison of Premium Hand Grinders for Coffee and Espresso

    A Comparison of Premium Hand Grinders for Coffee and Espresso

    The ascension of the grinder to its status as the most crucial piece of brewing gear is well deserved. More than anything else the grinder has the potential to make, or severely limit, the flavor quality of brewed coffee. It is natural, then, for this movement to extend across new territory—the world of mobile brewing.

  • Burr Grinder Basics

    Burr Grinder Basics

    So you want to buy a coffee grinder -- why not just grab any old thing on the shelf at the big box store? In this guide, we cover why grinding fresh is important for your coffee's flavor, what makes burr grinders more desirable, and how to select the right grinder for you.

  • Is It Always Better to Grind Fresh?

    Is It Always Better to Grind Fresh?

    The world of specialty coffee is full of standards and status quo. Some are instrumental to our progress and help to define us as an industry. Others, though, have little to no supporting data or objective value. When you come across rules like these, do you ever find yourself asking, "Says who?" From water temperature ("off boil") to tamping pressure (30 pounds), these fuzzy standards are everywhere, yet widely accepted.

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Additional Information

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