I absolutely love my vintage Singer buttonholer which is older than I am. I use it all the time on my Janome 6500 because the built in buttonholer on this machine will not handle large or thicker buttons. My buttonholer allows me to make key-hole, rounded or squared off end buttonholes and I can adjust the width. The buttonholes are always uniform and perfect every time. The original buttonholer came with five standard cams and the extra sizes and shapes could be bought in sets of four. One set also included the eyelet size. I'm definitely not throwing mine out and Joe can't have it either!