PR670E / PR670EC FAQs & Troubleshooting PR670E / PR670EC Not your product? Sort by Updated Date Popularity 3 Results 1. 12/04/2018 How do I wind the bobbin? 2. 07/31/2017 How do I install a bobbin into the machine? 3. 08/22/2016 How do I attach Iron-On Stabilizer (Backing) to Fabric ? Getting Ready FAQs & Troubleshooting