I have a Birdie electric rotary cutter. These are considered commercial cutters. There is an attachment of a sharpening stone that will sharpen the top edge when it is turned on.
This blade is hexagonal in shape. Do you all think this would work on a round blade?
I guess I will have to try it and find out.
I used to cut thru 12 layers of heavy poplin at a time with this cutter. The patterns were like heavy cardstock.