I recently heard of a great way to help stop the breakage issues of using metallic threads. I believe it was from the Anita Goodesign newsletter. So here is the tip of the week.
TRICK- When you are going to sew with metallic threads make sure to:
1. Use a metallic needle. They have a longer eye opening and are usually coated with teflon to reduce heat friction.
2. Use a new needle with each project.
3. Put the metallic thread on your thread holder (not attached to your machine)
TIP- Now if your embroidery thread is old and dry then it may have breakage just for that reason. So keep your threads in a cool area away from the sun (like away from the window).
I keep mine in a specially designed thread organizer, not just thrown in a pile, but standing up. Take good care of your supplies- they aren't cheap.
Should you continue to have breakage, clean your machine with your small brush, give it a drop of water in the bobbin area (if your machine requires you to add oil), check the bobbin area for loose bits of thread that could get caught on the hook system.