I have had these problems on the bottom when free motion quilting with several brands of sewimg machines; sit down and DSM. I am always told by the dealers
that it is because I am sewing too fast. Can't get any slower. Frustrating.
I have a second bobin for my Janome 7700. It has helped but still have the problem at times. Been told to get a second bobbin for my SD so as not to mess up the original.
Also been told that it might be caused by the bobbin not being wound tight enough.
Last edited by Fastpedal; 07-11-2015 at 05:07 AM.