Polyester or cotton thread
I've been using king Tut cotton 40 wt thread to quilt, I just put a new quilt (100precent cotton) on and dark blue thread . I clean the machine and changed the needle but the thread kept breaking. I am also going to use a white so changed to that but the thread continued to break. I reloaded the machine with a green king tut of the same wt and the machine quilted great without any breakage. I then cut a piece from the blue, white and green thread to do a pull to break test. The white broke with little resistance , the blue took a little more to break but the green was the hardest to force a break. My question is why? Same brand, same wt. I have now ordered a polyester blue and white to use. I've read many articles on quilting with polyester but would like your input.