Manually-operated fluting machine or iron with two, hollow, corrugated rollers, open at one end, mounted horizontally one above the other to a flat, coved-sided, rectangular base with swiveling C clamp at front right; model and patent information cast in top and maker across underside. Enamelled black with red and metallic gold striping and accents; lithograph of Mrs. Knox affixed in oval at center of base. Lower roller is mounted to two, tapered rectangular pedestal supports and has a wooden-handled crank at its right end; frame holding upper roller has an arched flat spring across its top and lever at back that pivots inside the end of an arm extending from the right support and ending with tension screw on spring.