the key to your threads not tangling is only using 18" or less lengths---some people pull off a yard of thread- not wanting to re-thread---then spend more time untangling than it would have taken to just re-thread when needed a few times- if you don't want to stop & re-thread numerous times at one sitting you could always start with threading a number of needles & have them handy- when you run out of threaded needles it is probably time for a break anyway.