Quilting thread is much heavier than regular thread. It is used for hand quilting NOT for the sewing machine. Often novice quilters buy quilting thread for machine piecing their quilt. This can be a costly mistake. Loaded onto a sewing machine’s bobbin, the thread can destroy the inner workings of many machines.
Today there are many types of thread on the market that say “quilting”. Make sure you are buying HAND quilting thread if you are quilting by hand. Buy MACHINE quilting thread if you are quilting by machine (or use all purpose thread). If you use hand quilting thread in your bobbin, you will cause problems to your machine, and this could be a costly mistake. This thread is much thicker than the thread for machine quilting. In the photo, the thread on the left is for hand quilting. (I tried to show the difference in thickness but it is hard to see in this photo.)
Most quilters use cotton fabric and therefore use cotton thread. To be truthful, I will use cotton covered polyester thread if I can’t find a particular color in cotton. 100% polyester tends to knot and may break easier than cotton thread.
I prefer to use Superior thread when quilting, as it rarely breaks and does not make a mess in my bobbin area. I order it over the internet at http://www.superiorthreads.com
I also use the brand Aurifil for piecing. Click here if you would like to purchase Aurifil from Amazon.