Input lever
Delivery & Mixing
Wheel face
Pour rate
The speed at which water is poured.
AeroPress Wheel Variable
Fines migration
Delivery & Mixing · Process state
Movement of fines through the slurry toward the filter.
Process state
Delivery & Mixing
Wheel face
Technical science
Competition practice
Definition
Fines migration is the redistribution of the smallest particles as motion and settling push them through the slurry.
Why It Matters
It changes clogging risk, filter loading, and cup texture.
Page Context
Fines migration is part of the Brew Supply AeroPress Wheel and helps brewers describe movement of fines through the slurry toward the filter.
Related variables
Input lever
Delivery & Mixing
Detail panel
Pour intensity
How forceful the pour is.
Input lever
Delivery & Mixing
Wheel face
Pour pattern
The spatial path of the pour.
Input lever
Delivery & Mixing
Detail panel
Pour stages
The number and structure of pours.
Input lever
Delivery & Mixing
Detail panel
Saturation method
How the brewer ensures all grounds are wetted.
Input lever
Delivery & Mixing
Wheel face
Exact stir count
The exact number of stir motions.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.