Gmill Salt or Pepper Mill Gunmetal 21cm: Adjusting Grind
By Grunwerg | Published: 2026-10-30
Category: How-to Guides
Learn how to adjust the grind size on the Gmill Salt or Pepper Mill Gunmetal 21cm. Simple steps for coarse to fine settings.
Quick answer
To adjust the grind on the Gmill Salt or Pepper Mill Gunmetal 21cm, twist the top knob while holding the base steady. Turn clockwise for a finer grind and counterclockwise for a coarser one.
Understanding the grind adjustment mechanism
The Gmill Salt or Pepper Mill Gunmetal 21cm uses a durable ceramic grinding mechanism. This ceramic burr is designed to handle both salt and pepper, and the adjustment knob on top controls the distance between the burrs. Turning the knob changes the gap, which determines the grind size.
Because the mechanism is ceramic, it stays sharp longer than steel and won't corrode from salt. This means you can switch between salt and pepper without worrying about wear. The adjustment range is wide enough for everyday cooking needs, from a fine powder for baking to a coarse crack for steak.
One thing to keep in mind: the mill is a single unit, so if you use it for both salt and pepper, you'll need to clean it thoroughly between refills to avoid flavor transfer.
Common mistakes when adjusting grind
A frequent error is turning the knob too far in one direction, which can jam the mechanism. If you feel resistance, stop and turn back slightly.
Another mistake is adjusting while the mill is full and then shaking it to test. This can cause uneven grinding. Instead, test with a small amount in your hand.
Also, don't overtighten the knob to the finest setting. This can cause the burrs to rub, producing metal shavings (if steel) or damaging the ceramic. The Gmill's ceramic mechanism is durable, but it's still best to avoid forcing it.
Steps to adjust the grind size
- Hold the mill firmly: Grip the base of the Gmill with one hand and the top knob with the other. Make sure the mill is upright and stable. Check that the mill is not overfilled; this can make turning the knob harder.
- Turn the knob to adjust: Twist the top knob clockwise to make the grind finer (for table salt or fine pepper). Turn counterclockwise for a coarser grind (for cracked pepper or flaky salt). Make small adjustments (quarter turns) and test between each change.
- Test the grind: Grind a small amount into your palm or a plate. Check the particle size and adjust further if needed. If the grind is too fine or too coarse, turn the knob slightly and test again until you get the desired result.
About the Gmill Salt or Pepper Mill
- Gmill Salt or Pepper Mill Gunmetal 21cm: Durable ceramic grinding mechanism The ceramic burr stays sharp and resists corrosion, so you can grind salt or pepper without affecting the mechanism's performance.

Gmill Salt or Pepper Mill Gunmetal 21cm
