CD/DVD Hub
thingiverse
The attachment acts as an instant mounting point for discs such as CDs or DVDs to serve as either wheels or flywheels within certain DIY projects, specifically geared toward items like mouse-trap cars or Stirling engines themselves. A precisely sized 0.120" diameter opening is available in the very center. I made this using KeyCreator initially, providing a step file now for any needed changes tailored toward other possible applications down the road as well. An actual printed model of the example has been done using an ABS plastic feed stock via a Flashforge Creator.
With this file you will be able to print CD/DVD Hub with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on CD/DVD Hub.