No CAD Necessary
Explore 3D printing with zero CAD experience necessary. Creating your own design from scratch is hugely rewarding, but learning a traditional CAD package can be intimidating. Here are 3 ways you can make physical objects with free online resources. Yes, in the literal sense the web applications are still CAD.
Print an Existing Model
Browsing the existing designs is a great way to get excited and learn just what is possible with a 3D printer. Thingiverse and Youmagine are active online communities where people share 3D printing models.
Designers upload models for you to print or modify. These communities offer social features for commenting on a design as well as liking or collecting. Creating collections in your account is a simple way to keep up with the things you want to print or visit again.