Fiber Markers Now you can add an artistic touch to your embroidery projects with Fiber Markers from Designs in Machine Embroidery. The set includes 20 Permanent Fabric Markers with 2mm tips. They are non-toxic, permanent and odorless. Dime Fiber Markers are ideal for decorating embroidery threads, fabrics and more. *For best results we recommend prewashing fabric. Also be sure to test the marker color on an inconspicuous area or on a piece of scrap fabric or a test design.