Hi, I have this book & like to play with different applique techniques & am wondering about her using rubber cement? Is it safe to use in a quilt project? She doesn't mention washing your quilt when done, but am curious about leaving it in the quilt? I know it says it flamable, so am wondering if I should even try this technique? So, any input would be helpful! I love alot of the blocks, &, it's a beautiful book, so am just looking for ways others have done them, or if they have tried her rubber cement method. Thanks!