I recently went to a Project Linus event in my are to sharpen scissors while blankets for hurricane victims were made. Many of the women were quilters and ask if I could sharpen rotary cutter blades. I just browsed the interwebs and found that wolff has a machine to do them but at $1K that is a whole lot of rotary blades to break even. and with the price of them under $5 each it would be hard to charge a whole to to sharpen a blade. However if a tormek jig were available it could be cost effective.