Check this out:
http://www.softexpressions.com/softw...s/SuRazzle.php
This threads are great for bobbin work. Basically you fill the bobbin (because the bobbin is subjected to less tension work than the upper thread) and you quilt from the back. You can do it randomly if that is what you wish, but with more detail and presicion if you use water soluble thread. What to do here is to fill your bobbin with water soluble thread as well as loading it on the top. Sew around the areas that you want to quilt inside, sewing from the top of the quilt, or do the quilting as you wish, looking at the quilt from the top. when you are finished flip the quilt upside down and quilt with the decorative thread on the bobbin, and the desired thread you need for the back of the quilt, on top. when you are finished you will have it double quilted. spray with water do make the water soluble thread dissapear, and now you have a beautiful quilt made with fancy delicate threads that looks amazing. When the quilt is wet the holes made by the first quilting close up and you don't even see them.
Maria