Made a friend his professional engineer stamp in 3D....somewhat. It is approximately 6" in diameter. If you would like me to customize it with your name and license #, then leave a comment. I will hook you up. It only takes a few minutes. Design files from Brink Effects are provided for your reference only. By downloading the files, you assume responsibility to verify the design for your use and safety. Brink Effects cannot control how the files are used; thus, Brink Effects does not hold any liability for the use of the files. Use at your own risk. Remember to keep small objects away from children and pets. Be cautious of sharp edges