Flourishing Palms: Rotary Mat Tip: scrub with dish detergent and a scrubbie to get fabric bits out, then soak in the tub for minutes in a solution of cup white vinegar to every gallon of cool water. Do this every so often to help extend its useful life.
Might work for my paper trimmer blades? How to Make Your Rotary Cutter Last Longer Sharpen rotary cutter blade by folding tin foil several times and cutting it with Cutter. Test on fabric scraps until it is sharp.