It was a bright and sunny day in Orlando, Florida when I was driving with my sister in her convertible Mini Cooper. As I reached down to turn on the radio, I was having trouble getting the volume to turn up so we could hear it over the noise of the wind blowing over our heads. As I was fumbling with the knob, my sister said, "Oh the button is broken and it doesn't really work." Curiosity got the best of me and I pulled the broken knob out and inspected the fitting. Sure enough, the insert was stripped out and wouldn't grab the teeth on the radio to turn up the volume. So, I pulled out my phone and did a quick search on www.thingiverse.com for 'mini cooper'. There were various STL files available to download such as new cupholders, custom keychains, cell phone holders and even a 1964 Austin Mini Cooper body.