Espresso calibration, alignment stability, burr geometry
Learn how to replace grind guesswork with a science-based focus on particle distribution and consistency, and why these drive extraction, flow, and flavor. Gain method-specific targets and simple calibration protocols - including sieve checks and thermal drift adjustments - for repeatable results at home or in service.
Anchor grind settings to roast density to keep extractions repeatable across light to dark roasts. Use simple cues - elevation, roast color, moisture - and thermal management practices to minimize dial-in waste and prevent drift mid-service.
Focus on mechanical stability over flashy features to get repeatable extraction: learn how alignment, thermal drift, and retention affect cup quality and how to test them at home. Then use the stability-tested picks to choose a grinder that stays calibrated for 5+ years.
Understand how particle size distribution - not average grind size - shapes extraction, with fines and boulders causing simultaneous over- and under-extraction. Follow practical diagnostics and grinder-stability steps to tighten distributions and achieve clearer, more repeatable flavor.
