| CPC A47J 43/25 (2013.01) [A47J 42/34 (2013.01); A47J 42/38 (2013.01); A47J 43/255 (2013.01)] | 6 Claims |

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1. A herb grinder comprising:
a metal sheet having a first surface and second surface opposite the first surface;
a plurality of circular holes in the sheet extending between the first surface and the second surface and arranged in a pattern to form a grinding area;
wherein each hole has a first radius at the first surface, and a second radius at the second surface;
wherein the first radius is larger than the second radius;
wherein each hole is defined by a conical surface on the inside of the hole; and
wherein at least some of said holes have a roughened texture on the conical surface.
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