Rotary cutting assembly

摘要

Disclosed herein are rotary cutting assemblies for cutting growing vegetation with tough whirling filament. The assemblies generally comprise an elongate lineal shaft extending along a vertical-axis, the longitudinal shaft having a top-end for removable insertion into a portable manually-graspable powered chuck; a horizontal disc-like base-plate in co-rotatable association with the shaft lower portion; a convolutely coiled supply of filament surrounding the shaft vertical-axis; axial confinement means for confining the stored filament toward the base-plate; retainer means attached to the base-plate for removably securing successive leadward portions of the wearable cutting filament adjacent the base-plate peripheral-edge; and gravimetric balancing means for the rapidly rotating lower head portion of the assembly comprising base-plate and environs.