I use SID to anchor the blocks of my quilt - for me, it defines separate spaces and I don't have to worry about the fabrics shifting as I free motion within those defined spaces. It may not show very well on the front (which is okay, I really don't want it to be the focus on the front) but it helps define the quilting on the back, and I really like the look of that. It's also nice to be able to put on the walking foot for some easier quilting :lol: :lol: