Please forgive me if this is an ignorant question, but I can't seem to find a past topic that addresses this question fully: As a happy owner of a Printrbot Simple Metal, could anyone enlighten me as to whether the RepRap community considers their designs to be truly open source? I know that Printrbot makes a number of their CAD files for their electronics available under CC-NC-SA. I have also sby hceline012 - General