About this 3D model

This is a dual hotend version of my bowden carriage: http://www.thingiverse.com/thing:112493 Check it for more detail. Hotends are 30mm apart. http://www.youtube.com/watch?v=NtFYCsed-1s&feature=c4-overview&list=UUhGTFyOeZanQUVr1PQcnSng