The fusible grid is good for new quilters and for SMALL watercolor wall hangings. My daughter and daughter in law both used the grid to make small patchwork quilts. They were both very unsure of getting their quilting 'intersections' to match up and this stuff made it a breeze for them both. I've used it for the small wall hangings with great success, BUT in making a huge quilt, it was an incredible pain. Had to do it in sections and then sew the sections together. And the part of it gunking up your sewing machine, that was sooooo true.