OB1.4 dual extrusion

My home made 3d printer with dual extruders. Printer info can be found here:

basic printer design
http://www.thingiverse.com/thing:41967

dual extruder and carraige
http://www.thingiverse.com/thing:157817

In this video, the first extruder is printing red ABS plastic while the second extruder is printing High Impact PolyStyrene for the support structures. This material can be dissolved in common cleaning solvent Limonene, leaving a nice clean object (that smells like limes).

Видео OB1.4 dual extrusion канала Mike Downey