I see everyone does things differently. I don't get nests. I don't pull the bobbin thread up before I start a line of quilting, I don't pull it up after a line of quilting. When finished the line, I release tension, move the fabric (on my domestic) or the machine (on my long arm), put the presser foot down and do the next section f quilting, still not pulling through the bobbin thread. So what if (no, not if, when) I run over a bobbin thread? When I am finished the quilt, I turn it over, clip all the threads halfway between spans, and bury them. The ones that were run over by later quilting get pulled out from under the over run and get buried just like anything else. If you think you are securing your bobbin threads by pulling them through while quilting and cutting them flush... think it through a bit more thoroughly. All threads really need to be buried in the batting for a 1/2 inch or so to make sure they don't pull out when washed. JMHO tim in san jose