I hope this video helps those new to 3D Printing. With all models, it is extremely important to check if they can be printed, or if they have a problem. I do this with netfabb, and this is one of the 5 steps I take with every 3D Print. netfabb can repair your models and make them printable, and I personally used it a lot, it’s a complete lifesaver!
https://youtu.be/TXwGJWX2-lQ