I use regular copy paper. I work in a physician's office and we get tons of faxes with cover sheets. If there isn't any patient name on the cover sheet the staff saves them for me. I use these for paperpiecing. It's amazing how much paper is wasted: I have a stack of cover sheets over 8" high after only 6 months. I've tried the Carol Doak papers and found they jammed my printer. I have no problem removing the copy paper from my blocks. I use a small stitch length, crease the paper with my fingernail and tear it away easily.