Before you buy thread(matalic) in the store , loosen it off the spool about 12 to 15 inches, If it curle,s up like a perm then it will keep breaking on you. Your buying it on the little spools, try buying it on the larger spools i know its more expensive but it will not break. Nor will it curl up on you. See the difference when you take it off the spool, it will be straight not curled up. PS: do this before you buy it and leave the store.