About this 3D model
R1: Open Source Blocks Construx More information: http://exergy123.blogspot.com/2012/02/u1-y-r1-open-source-construx-blocks.html
R1: Open Source Blocks Construx More information: http://exergy123.blogspot.com/2012/02/u1-y-r1-open-source-construx-blocks.html