I always double sew my seams so they don't come apart for that very reason. start at top go down flip it and start from the bottom to go up. never had any come apart yet. course you need to make sure you never make a mistake, because it is a B to take that apart to correct the mistake. I use the thread from Joamm's and I also got thread from Connecting Threads. My DH also bought a big box that was full of cones in different colors at an auction sale. no name on it for a brand.