I use a tear away embroidery stabilizer. Although they do tear away all around your embroidery, they have a grain and will tear much easier in one direction. I cut about an 18" piece (width doesn't matter, but I usually work with 4 to 12 inches) and make sure there's a good straight edge going in the direction of the grain. Lay your pieces so the raw edges match the edge of the stabilizer all along the length. Sew your 1/4" seam, like you are chain piecing down the entire length of the stabilizer, then carefully tear away. Because you sewed down the entire length, you can usually tear the 1/4" piece off. Lay the next group of pieces on the remaining large piece and repeat. I often do this if I have a bunch of small HST, as this prevents the leading edge from being pushed into the needle plate.