| 摘要 |
A novel sheet material cutting device comprising an elongated planar base plate including a bottom base plate surface adapted to lie on the top surface of a flat sheet of cuttable material, a top base plate surface overlying the bottom surface and spaced-apart therefrom, at least one elongated straight cutting edge between the bottom surface and the top surface and parallel to the main axis of the base plate for contact with a cutting blade during cutting of sheet material lying under the bottom base plate surface, and a trailer edge spaced-apart from the cutting edge, and a guard wall extending upward from the base plate top surface, between the cutting edge and the trailer edge and parallel to the main axis of the base plate, the wall curved toward the trailer edge to provide an ever-expanding space between the cutting edge and the guard wall as a function of height above the base plate top surface.
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