Stepless vs Stepped Coffee Grinder Adjustment: Precision and Workflow

Volume I  ·  May 2026  ·  219 words

The adjustment mechanism on a coffee grinder determines the granularity of grind size changes. Stepped adjustment — a detent ring or lever with discrete positions — provides repeatable settings at the cost of limited resolution between steps. The Baratza Encore ESP has 40 steps covering espresso through French press, with approximately 20 microns between steps at the fine end. For espresso, 20 microns is the approximate difference between a 25-second and 30-second shot for the same dose — meaning a stepped grinder can get close to optimal but may not land exactly on it. Stepless adjustment — a continuous thread or worm gear without detents — allows arbitrarily fine adjustments. The Eureka Mignon series and DF64 use stepless mechanisms. The trade-off is workflow: returning to a previous setting on a stepless grinder requires counting rotations of the adjustment knob or marking the dial. For a single coffee brewed consistently, stepless provides superior precision. For a grinder used for both espresso and filter coffee with frequent changes, stepped adjustment with numbered detents provides superior repeatability.