JA20 FAQs & Troubleshooting JA20 Not your product? Sort by Updated Date Popularity 5 Results 1. 12/12/2018 How do I sew hook-and-loop fasteners(hook-and-loop tapes)? 2. 21/01/2016 How do I sew with the twin needle? 3. 18/11/2015 How do I adjust a stitch width or length? 4. 18/11/2015 How do I sew buttonholes? 5. 10/06/2009 How do I sew such as vinyl, leather, quilting layers and velvet? Sewing (Utility Stitches) FAQs & Troubleshooting