Identify an OSAT that you would like to design to be a 3D printable technology
Make sure someone else has not already done it : existing designs here.
Reserve your OSAT by signature tagging with ~~~~ next to the OSAT on the list generated by the Appropedia community: Requests for 3-D printable open source appropriate technology. You can add your own ideas to the list, more than one of you can tackle the same tech in a different way, you may improve upon existing designs if you do so in a significant way. Do this by 11/18
Design 3D printable components with ONLY OS CAD packages (e.g. OpenSCAD, FreeCAD, or Blender)
Create a Appropedia page for your project. (Easiest way to create a page is to search for the name of it and then click on the red link or in the list put double square brackets around it)
Include the following sections on your page using the template below (copy and paste wiki markup into your page)
Add picture and link to your project page in gallery below.
Print component and bring to class - Complete and due by 12/4
20% Print quality
25% Design (design for printing, plastic minimization)
25% Function - Is it OSAT? Does it work?
-50% no source or the use of non-OS software
-10% per day for late
Add your image and link the gallery below in a single line after the last one in the list
Include common mistakes/problems to avoid in building your OSAT and how to overcome them
If your solution is not a low cost one then it is not really appropriate.
Estimate your costs
Find a commercial equivalent
Calculate $ savings and % savings
The sources of information (e.g. engineering handbooks, journal articles, government documents, webpages, books, magazine articles etc.). References should use the <ref> </ref> and <references/> tags and can be in any format but should include all the information necessary for someone else to find the same information you did. For example: 
Based on the developmental needs addressed (e.g. food, heat, electricity, clean water, health care, etc.) be sure to label your device in the proper categories e.g. use [[Category:Water]]. Be sure to categorize your device so that it will be easy to find – for example “Low voltage connection basics” is categorized in