Version changes
last updated: April 2, 2013
author: Raymond Ma

--Ver 0.4.1--
license changed from Creative Commons Attribution-ShareAlike 3.0 Unported to Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported

--Ver 0.4--
initial published revision
minimal structural thickness set at 3mm
production/fabrication tested on Stratasys 3D printer
2-part top plate option to aid in assembly if necessary