An abrasive filament including a matrix of thermoplastic polymer; and a
plurality of abrasive particles such as eutectic alumina zirconia
particles interspersed throughout at least a portion of the matrix.
Abrasive brushes including such abrasive filaments are also disclosed.
Methods of deburring a substrate having at least one burr, with a brush,
the brush having bristles including eutectic alumina zirconia particles
and a matrix of thermoplastic polymer, wherein the method includes the
steps of: contacting the substrate with at least one bristle of the brush
in a contact region; and inducing relative motion between the substrate
and the at least one bristle.