I've done this more than once. It's that darn binding you want to get on and so you rush to finish it. You think only a bit more and i'm done, then you see how wrong you were. That binding is flapping away in the wind, and the tiny needle holes are staring you straight in the face and laugh at you. Then if you're like me, you don't have another bobbin, so you have to pull the thread out and wind a bobbin. by this time, you're sick of it and go back later to finish it. You think by now, i've learned my lesson.