I was in a shop last weekend where someone had done one of the Hoop Sisters quilts (a whole cloth design) using two colors of thread. Talk about giving an embroidery machine a real workout!! Blocks were hooped with top/batting/ and backing. The woman used Hobbs 80/20 batting, and (of course!) there's some gizmo to trim blocks to make joining blocks together "easy" and exact. Anyway, the blocks are seamed on top with 1/4" seam, then the batting and back are trimmed so the edges line up precisely next to each other and a 1/2" bias strip is serpentine stitched in place both edges of the bias strip using monofilament in bobbin (which doesn't show on embroidered top) and color to match the bias strip . I don't think I'm explaining this well, but it was a lovely piece of work. I'm doing a small Christmas wall hanging right now using blocks from Molly Mine just so I can practice the technique without the edge trimmer thing.