I like Charlee's idea of using parchment paper. Several years ago, when I bought a paper piecing book, I also bought a pack of "paper piecing" paper ... I think I ordered both from Nancy's Notions catalog. Anyway, I can't find the pack of paper this morning, but I did find the book with a sliver of the paper stuck inside of it; the sliver looks like vellum. Paper piecing and I did not do well together, so I only did a few blocks but I recall that paper worked o.k. To me, it looks just like parchment paper.