First time. I used a drill and found it 10 times sharper and easier to start in this plastic model than any other drill that came with the pin drill. The junk bits only worked after using the gyroscope bit to make a smaller starting hole. That was just as important. The set was missing two pieces upon arrival. Out of curiosity I found the cool gyros website and contacted them. In less than a week I had a package with two pieces missing! The woman who helped me was amazing!