I thought I might mention www.preciousplastic.com in this forum.
The philosophy of preciousplastic.com was:
1. Develop machines to recycle plastic--designed so
the machines could be built using basic tools and materials.
2. Share the blueprints online--for free--open source.
3. Provide people the knowledge to recycle
local plastic
waste into a variety of usable and saleable items.
The instructional videos are on the website and also
on Youtube. The site has all info in a zip file for download.
Here is the intro
video: