Alicia's Attic Qtools Corner Cut 60 deg. 2 In 1 Sew the same allowance on any machine. Make all seams the same for group quilts. Sew a Perfect Scant 1/4". Trim 60 degree ears for faster seams. Use this tool to mark a scant 1/4 inch on any machine and to trim 60 degree points for exact seam allowances for all two degree designs.