Hand applique: ideal for all types of hand applique. From needle turning to using prepared shapes, the 50wt is thin and with all the colors available you can match your shape perfectly. Machine applique: ideal when a very fine finish is desired. This weight disappears so your fabric is the feature. Use for a straight stitch, small zig zag, blind hemming stitch, and blanket stitch. Machine embroidery: great results every time. Use 50wt in the bobbin as well, or your regular bobbin thread in which case tighten the top tension a little. Use a Microtex 80/12 needle. Uses: Needle Turn Applique, English Paper Piecing, Hand Piecing, 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 and Micro Quilting, Dense Background Designs. Needle Recommendations: 80/12 Microtex/Sharp, Universal, Quilting, or Denim Needles (50wt in the bobbin) 4.0 Longarm Needle (50wt in the bobbin)