Does anyone know how many stitches a bobbin of 60wt prewound can sew? No, this isn't a trick question, LOL! I have some fairly dense designs, like 45,000 + stitches. I hate running out near the end of one, because it takes so long to get back to where I was once the bobbin is changed. But I also hate to put a new one in if I'm half way through and have enough left for the design.