Hareline Blend Your Own Custom Dubbing Tools and Kit. Create your own custom dubbing blends with this cool kit from Hareline. Use your coffee grinders for what theyre designed for; to grind coffee. Plus, the same grinders often tangle longer fibers and create a unusable mess. The Blending Board and Hand Carding Brush are made with commercial grade carding cloth that will last for years of daily blending. You have full flexibility to blend any natural or synthetic materials from short, natural hair to longer 6" fibers. Put the materials you wish to use on the 4" x 8" Blending Board. Stoke against the grain with the Hand Carding Brush to blend. Run the brush with the grain of the Blending Board to release the material. Repeat. Keep a log so you dont forget your formulas. Kit comes with a sample pack Ice Dubbing and a sample pack of Wool Dubbing, the Blending Board with Handle, Hand Carding Brush and complete instructions with photos. MADE IN USA.