Hi, sorry your having such a problem. I only have that problem when I have to cut fat quarters for my monthly guild meeting. They don't want the fabric washed. When I wash my fabric I have no problem cutting it and some of my rulers have invisigrip and some don't. But the washed fabric does not seem to slip when I am cutting it. I dis like taking the time to make a quilt and have it bleed and colors run on the other squares so I wash all my fabric first. Any that does not maintain a color I just don't use.