Every time I try free motion quilting with my ancient machine (Singer Futura II that I got in '76!) my needle breaks. I can't adjust tension in the bobbin, but I can in the top and it doesn't seem to help. In fact, the only thing that seems to do is mess up the sewing that I do manage to get before the needle breaks.
I have no problems with regular sewing. I really want to figure this out, since a new machine is not in the budget this year. This one has served me faithfully, and been a real work horse. I plan on taking it in for servicing while I go on a vacation next month, but if anyone has any suggestions in the mean time, I'd appreciate it!