I came across this tip and think it's really good to know. I want to share it with everyone!

Machine sewing tips you wouldn’t think of. Depending on what you use it for…if you are doing something like solid embroidery, or even a straight stitch….all metallic type threads works better if you put them in the bobbin and work upside down…because, the thread is not sawing through the needle dozens of times, so it stays strong….I realize that not everything can be sewn right side down…but when possible it’s much better….