One way to create a 3D object is to design it from scratch. Any CAD software that will export an .STL file will work.
We provide links to some free CAD software to the right. Make sure to export or save your file as .STL so it can be printed by the 3D printer.
We recommend Tinkercad. You can use Tinkercad from any web browser- no downloading software! Tinkercad comes with online tutorials to help you learn the system.
Try these other 3D CAD software programs. The following programs are free downloads.