Aurifil’s 50wt thread is the most versatile and popular Cotton thread. The 50wt is strong and thin, results in remarkably flat and crisp seams. It is wonderful for piecing, subtle quilting & top stitching, English Paper Piecing, Needle Turn Applique, Bobbin and Machine Lace, Machine Applique (Straight Stitch, Zig-Zag, Blind Hem and Blanket Stitch,) Machine Embroidery, Dense Machine Quilting, Subtle Machine and Longarm Quilting, Basting, Whole Cloth, Micro Quilting, and Dense Background Designs.