It's not the highest quality but it does work. I made about 20 so far with no issue, BUT the first 2 my partner made didn't work. After some investigation she wasn't pushing all the way down. I think thats the problem others are having, on the second push it feels like it stops but if you push a bit more it pops down. The metal backs dont hold the actual pin in so it wobbles a bit, but the plastic ones work great.