Not what you were thinking, uh!
These little bobbin washer could make a big difference in your sewing, quilting and machine embroidery life.
My girlfriend, Annie (no blog) introduced them to our group a few months ago when we were all complaining about the bobbin threads always slipping or knotting up. Annie whipped out a package of washers and handed them out and said, "Just try it....you'll like it." She was so right. I, for one couldn't believe the difference that little reinforcement hole made...remember those from elementary school.....LOL.....
These washers are make from some sort of plastic so they last a long time. The ones I purchased were designed by Sharon Schamber, author, teacher and master quilter.
If you've had trouble with your bobbin and can't seem to find a solution, you might try the washers.