I love sewing with a double needle. I think it makes such a professional look. When I used them in my sewing class at college, I never had a problem with them. Well I have the same exact sewing machine model, but I have problems with the bobbin thread tunneling. On some knits you can’t see it, but on really light knits it can always be seen. I realized that the foot of my sewing machine has different heights which changes the pressure put on the fabric, and my foot was at the highest. My fabric didn’t have enough pressure on it! Now that my sewing machine foot is at the lowest height, I never have a problem with tunneling!
Every Monday I like to answer your sewing questions! Feel free to ask questions in the comments or email me. Also, if you know the answer to someone’s question, go ahead and answer it. We’re here to help each other learn about sewing!