So you have your model and your .stl file, but how do you know if it is a good file?

Netfabb provides two free ways to fix your files:
  1. Netfabb's Cloud Services
  2. Netfabb's Studio Basic

Netfabb's cloud service will repair your file for you by removing duplicates and ensuring that your mesh is manifold and oriented.

  1. Open a browser window and navigate to

  2. Upload your file

  3. Go to 3D view and Download the fixed file

Netfabb's Studio Basic (Netfabb) allows you to repair your models on your desktop. You'll need to register online in order to obtain the key to run the software.