Importing 3D objects
As mentioned in the previous section, 3D models can be saved in generic file formats such as an STL or OBJ file type. These formats are universal, and ones that can be shared and opened in many different CAD programs for modeling and production using 3D printers. Tinkercad can export these models, which we will discuss in more detail later in this book as we get into 3D printing our designs, but Tinkercad can also import these models which is a powerful method for enhancing and expanding upon your creations.
You can browse for 3D model files on countless websites, such as Thingiverse or Cults3D, and many of the models you find are free for non-commercial use. As you browse for different designs, it is important to ensure that it can be downloaded in either an STL or OBJ file format, or else it may need to be converted, as discussed in the Technical Requirements section of this chapter. You also need to ensure that the file size is less than 25 MB, or else Tinkercad...
