I know and am thankful that there are no rules for quilters or quilting. :-D That being said, a friend of mine who also quilts says that I use the wrong type of thread as I use 100% cotton or the cotton thread with the silk glace finish. Furthermore, when I look at the pictures of sewing rooms, I notice that most use the poly covered cotton thread. I also recently sewed with some poly covered cotton (can't remeber why) but found that I hated using it. So I guess my question is do I use my preferred thread and ignore my friend's suggestions? Thanks for any help and/or suggestions.