I do alot of pp and starched fabric is key to keeping bias edges under control. I tear the paper away from the seam edeges whithout removing all the paper from the block before I sew each finished block together and finish removing the paper after each block is sewn together.Removing the paper from joined seams is very difficult and fustrating. I remove the paper first from along the seam area, sew the seam and then remove the rest of the paper as I go along. You really don't want to remove paper from an entire quilt at the very end of the project. Just imagine a queen size pineapple block quilt with paper on the whole back.