Piping Hot Binding includes a detailed booklet of instructions, Groovin' Piping Trimming Tool and cording. Designed by Susan K. Cleveland. Groovin' Piping Trimming Tool: To create a perfect seam allowance on piping, simply lay the tool over sewn piping with the cording in the groove then cut along the tool's edge with a rotary cutter. Voila ... a perfect seam allowance. The tool is 11.5" in length so I'm able to trim 400" of piping in about 20 minutes! Two grooves are available offering 1/4" and 1/2" seam allowances. . Use with cording up to 1/8" in diameter. . Turn the ruler for use left-handed. . Use any size rotary cutter: 28mm, 45m or 60mm. Booklet: Sixteen pages of instructions cover every detail of adding amazing piped bindings to quilts. In 1998 I started teaching this technique and have taught over one thousand quilters to create special bindings for their quilts. These instructions have benefited from years of experience and the quilters who have given feedback on this technique.