I love paper piecing, and use only copy paper. I do not have the patience to hand trace patterns onto any type of foundation papers, and the ones I've found that can go through my printer, both at home and at work, are just too wicked expensive. Copy paper takes the iron well, doesn't mess up my cutter blade, and is easily removed if you make sure to pull all of the seams gently in both directions so the paper rips a little. I just a fine point tweezers to pull out any little stubborn areas of paper.