Use Madeira Monofil #40 transparent thread for quilting, sewing and serging.
Sewing Transparent Threads- Size .004 Clear Monofilament 1500Y Mini-king Spools
9763 1100 Yards spool of clear nylon mono-filament 40 weight machine embroidery thread
High Quality Nylon Thread: The clear quilting thread is made from 100% nylon monofilament thread, waterproof, pliable and non-stretch, thick sewing
Nylon Monofilament Thread - Clear White Invisible Fishing Line Transparent Sewing Threads for Quilting Blind Stitch Floss Jewelry String for Hanging
Clear thread for sewing machine made from nylon; Non-stretch clear sewing thread; Tangle free clear fishing wire; Waterproof transparent tread;
Mandala Crafts 0.1mm Nylon Invisible Thread for Sewing Quilting - Fishing Line Monofilament Transparent Thread for Wigs Beading - 11430 Yds Clear
Madeira Thread
Madeira Rayon 48 Spool Embroidery Thread Kit Set — AllStitch Embroidery Supplies
0.14mm 0.15mm Nylon Monofilament Sewing Thread 3000 Yards Suppliers, Manufacturers China - Low Price - NTEC
0.08mm-0.25mm Invisible Nylon Transparent Thread Monofilament Sewing Thread Suppliers, Manufacturers China - Low Price - NTEC
Wonder Invisible Thread – YLI Threads