Dewrose, I seldom change my bobbin in my embroidery machine. Only occassionaly is it necessary. Most of the time I use white in the bobbin and some people use black or a gray. Your machine should stop when it is time to change thread . Hope this helps. I have only had my embroidery machine about a year but I have had fun with it. Sally

The machine will stop when the thread needs to be changed, there is a color code imbedded in the design that tells the machine to stop. Try and use white or dark 'bobbin' thread and leave it in. ThatÂs bobbin thread, not sewing thread. Also, use embroidery thread on top, not cotton sewing thread. Rayon (usually a bit brighter, or polyester (stronger, color fast).

Good Luck