This collection contains links to projects that make use of 3D-Printers to design Open Source Appropriate Technology or OSAT. For a better understanding see the project page: http://www.appropedia.org/Category:OSAT_3D-Printable_Designs or the academic paper: 3-D Printing of Open Source Appropriate Technologies for Self-Directed Sustainable Development”, Journal of Sustainable Development 3(4), pp. 17-29 (2010). http://www.academia.edu/1507915/3-D_Printing_of_Open_Source_Appropriate_Technologies_for_S