I have a question about thread. Is it really important that you use cotton thread when quilting? If so, what is the difference if you do use it. I'm a newbie and have a resource to get Polyester thread cheap. Cotton thread is so expensive. Also what does Mercerized mean and the numbers that look like this "Size 50/3". What is good and what is bad. What will happen if I use polyester instead of cotton on my quilt. Thanks for all your input.
Also, where do you get those fancy signatures to your posts.