I was little concerned about the machine because of the reviews of some people. In my case, I receive the machine and the instructions sucks, but you just search on YouTube and there is videos about how to install and how to make the buttons and is very easy to follow and I just try with a piece o paper (sticky note) and as you see my number one button, first try and it was perfect!The quality of the buttons are not the best so I_ going to buy the pin buttons in another store, but just to try and practice they are ok, and the machine is strong, iron or some metal, is little heavy, so I feel good with this purchase!