Good question for me. I just machine quilted a quilt for the first time. I ended off leaving a length of thread, brought it to the back and tied it 3 times. I then inserted it into the back into the batting to hide the ends, approximately 5/8 inch.
I did this method as I made this machine on a 1930 Vintage Sewing machine that has no reverse!
I am anxious to hear the proper way of doing this.
:) :) :) :)