I also PP and learned from Carol Doak. Mostly I have used newsprint that comes in large pads from an office supply store. I use a dull blade and cut 8 1/2 x 11 sheets and put them in my printer. I just figured out that when it comes time to remove the paper, a light misting of water with an atomizer, will cause it to almost fall out. It is my favorite kind of piecing.