Everything about extruders - one of the functionally most important parts of any filament-based 3D printer!
http://www.youtube.com/watch?v=iTPhOVDxeWI
I want to do this
Am just looking for this kind of machine
So, how’s new Titan during work? 
Excellent video as usual!
Just show me how to do
@Max_Jacob check out http://reprap.org/
You might be able to find people near you who can help.