DEFCAD was born out of protest. In December 2012, popular design platform began removing firearm-related models in response to regulatory pressure. This act of censorship directly led to the creation of DEFCAD as a dedicated repository for "misfit objects"—designs deemed too controversial for mainstream platforms.

: A dedicated repository focused on maintaining a free, open library of designs. Final Verdict

Regarding an interesting report on Defcad files and 3D printing, there have been several studies and articles on the topic: