7. Now you pull your hands out a bit to straighten up the string and the button should start to spin round really fast. You then relax your arms in a bit and then pull out again. Keep this up and the button should spin round and round really fast and start to make a humming noise. If it doesn’t keep spinning, it might not be heavy enough so either use a heavier button or shorten your string. Keep trying and you’ll get the hand of it and it will start to make a humming noise.