A true dual head extruder

Nice, a simple head that can switch between 2 filaments via series of gears.  Kindof one of those “I should have thought of that” moments.  I like the idea, but at around 175 for a head…I’ll pass.

http://www.3ders.org/articles/20130810-the-dual-and-quad-reinvented-3d-printer-extrusion-head-on-kickstarter.html