This is my first time using a tool like this and I had trouble with it, but after some trial and error and a few YouTube videos I got it. There's no problem with it other than the vibrations it creates and I use a vise to clamp it so it doesn't move at high speeds. The other thing is that the size is smaller than I expected and it's up to me how I put it on. You don't pay much attention to the dimensions and you can only work with small parts and then there's the motor. It's very easy to stop even at high speeds, so you have to be careful with it so as not to burn the motor. I played around with it today and made a piece and it works well if you know what you're doing as I didn't initially, but overall it's a nice machine for the price.