It is well known that raising the table height when using a rotary cutting mat will save the user's back. Bed risers are commonly used under table legs. I have another solution to staving off back pain when cutting. Years ago a quilting magazine published a design for an angled wooden rack to slip onto the cutting table. My kind husband made it for me and it works beautifully. I wish that I could remember where the design was published. I had a long time subscription to the Quilters Newsletter, so it might have been there.