From: http://www.3dprintingbusiness.directory/open-camera-project-brings-truly-affordable-dslr-accessories/?utm_content=buffercf726&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer#social

DSLR (and GoPro) camera accessories are extremely expensive. Even more so for rigs. And yet rigs are 
some of the products that can be 3D printed more efficiently. The biggest challenge – as is often the 
case -is designing them but through open source sharing, it may be enough for one person to begin and 
let everyone contribute to provide the community with several affordable designs.