Installing the heated bed plate cast out of aluminum by Jeff Nading.
RepRap is an open source project for designing prototyping machines that can self replicate. You can learn more at the link below:
http://reprap.org/wiki/Main_Page
To watch my build progress you can visit the thread I started at the RWGresearch.com forum hosted by open-source-energy.org:
http://open-source-energy.org/forum/showthread.php?tid=124
...
https://www.youtube.com/watch?v=VLXvfdquohg