Grinding mechanism

Blade

Blade grinders work like blenders, slicing coffee beans into small granules.

  • Tend to be cheaper than burrs
  • Least uniform grind size

Burrs

Burr grinders capture beans between rotating serrated surfaces. The beans are crushed under pressure.

  • Overall more uniform grind size
  • Can be adjusted more precisely

Conical burrs

  • Cheaper than flat burr grinders
  • More bimodal grind distribution

Flat burrs

  • The most uniform and consistent grind distribution
  • More expensive
  • Can run noisier and hotter when grinding large amounts
  • Can have problems with retention, which is usually mitigated by bellows or installing them at an angle

Burr material

  • Ceramic is sharper and retains its edge better, but can break
  • Steel is overall more durable
  • Steel generates more heat if grinding large amounts