If you go to Superior Threads website and read about needles you will likely be amazed. Unless you know a lot about needles that is but it sounds like you would be interested in learning a little more about needled. dr. Bob, owner of Superior and needle expert, lectures all over the country about thread and needles. According to the expert, the only needles he uses are the titanium coated top-stitch. According to dr. Bob all we need is 4 needles: Titanium coated 70/10, 80/12, 90/14 and 100/16. Watch their short video to determine which needle to use for which application. Good luck and happy quilting. And after you do what dr bob says for metallic thread,, tell us if that does not work