Originally Posted by quiltingshorttimer

I had a large Fiskar cutting mat that was worse for wear--no amount of new rotary cutter blades made a difference and all the scrubbing in the world did not seem to help. I really don't think these mats are self-healing. So, since there was no way that I could ever use that much "tote bag bottoms" I decided to give sanding the mat a try. I used the ultra fine sandpaper and used circular motions--just the way my son had taught me when I was helping to sand primer on a car paint job, so that it would not leave gouge marks. It worked! Yes, the black marking lines did fade a little, but they are still very usable to line the fabric up for cutting with rulers. Just make sure you use a light touch and really clean off the surface afterward. Not sure how many times it will work to refurbish it this way, but figure that it's worth it to have that cutting blade smoothly cut fabric!