Originally Posted by
wishfulthinking
Interesting! What size needle?
Whatever size fits the two threads together. I normally keep a size 80/12 in my machine. I don't think I up-sized that when I used two strands of regular thread (50wt 3-ply), but maybe I went up one size. It's been awhile. You would probably want a larger size and a topstitching needle if you are sewing fast. As I mentioned, I was going slowly to do machine applique,