Adjustable Guide Arm for Rotary Cutter
I do almost ALL my cutting using a rotary cutter and use a guide arm to vary seam allowances. Olfa stopped making their version years ago right at the time Burda started including seam allowances in their patterns. Finally, this handy gizmo is available in a slightly different form. Works great with the Olfa 28, 45 or 60 mm cutters, though be sure that your cutter has the necessary hole to insert the screw that holds it in place. This is one of my most important tools.