To do this use a tapestry needle and weave the thread tail back and forth into the back side of the stitch. This will make the stitches less likely to separate (as the seam allowance is small). Take time to secure the thread tails of the seams before sewing the next seam. When piecing the T-shirts, flower head pins are great for working with an overlocker because you can pin parallel to the seam line and the presser foot can move over them easily. Using the flatlock stitch, assemble the top in sections improvisationally. Set up your overlocker for a 3-thread Wide Flatlock. Remember that your overlocker cuts and sews in one step, so a square that is too large can be trimmed as it is joined to the next piece. Lay out the pieces into a pleasing arrangement. Think about using parts of the shirt as design elements pockets, neckbands, sleeves and even hems make fun textural elements in the blanket. Using a rotary cutter and ruler, cut the t-shirts down into rectangular /square shapes.
This is a fun and fast way to use your favorite tees to make a soft blanket to take to the game or snuggle in at home. Finish it up by tying the layers together with some decorative buttons from your button collection. Add a fleece back and sew the edge with a 2-thread wrapped stitch. By using flatlock seams, the ladder side of the stitch adds a fun design element to the piecing.
The overlocker is a great machine for sewing knits and makes fast work of this project. Why not upcycle them into a stylish T-shirt quilt using your overlocker? Everyone has a T-shirt collection, whether intended or not.