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Fluff Knife Upgrade for GK’s DE-STONER®

Maximize automated air classification with General Kinematics all new auxiliary Fluff Knife. What’s a Fluff Knife? An air knife to further enhance separation from lights and ultra-lights.

How the Fluff Knife Works

DE-STONER® Air Classifiers effectively separate lights from heavies with a remaining middle fraction combining some lights with heavies. By incorporating the Fluff Knife this middle fraction can be further refined to increase your separation. The Fluff Knife can be added to existing DE-STONER® Air Classifiers or included with any new equipment designs.


  • Easily adjustable on the fly.
  • Can be added to existing equipment.
  • Use in conjunction with a divider for further material classification.