This is a great product. It was pretty easy to figure out how to use within a few minutes. I am very happy with this purchase and the value. Each button only takes a few seconds to put together.As long as the circle is cut to the proper size and all of the parts are set up correctly in the machine, I do not have any problems with buttons not coming out properly. Also, be sure to pull down on the levers all the way. If you don't pull down on the lever, the button parts won't get binded properly and it will not work.