| 摘要 |
An abrasive material comprising a base surface having a plurality of pyramidal shapes and a plurality of butte-like shapes protruding therefrom is provided. The base surface and the protrusions being formed of the same material. A portion of the protrusions have a substantially triangular, square, or polygonal base and triangular sides which meet at an apex which substantially forms a point and a portion of the protrusions have a substantially triangular, square, or polygonal base and substantially trapezoidal sides the portions sides thereof distant from the base surface forming a plateau such that the protrusions are substantially butte-like in shape. The protrusions provide intermixing cutting and planning edges in a pattern such that the material is capable of abrading independent of direction of use. The butte-like protrusions provide a substantially gliding surface such that the abrasive material is particularly useful in finish sanding. |
