We’ve have been getting a lot of questions in regards to dual extruders and the LulzBot TAZ. We’ve done some work with a dual extruder setup. Here are some links to some of the work and items. Please keep in mind that it’s still somewhat experimental. I would be interested in hearing about your progress, for I hope to do the same!
Dual extruder mount: http://devel.lulzbot.com/TK-0/TestObjects/dual/double_extruder_mount_2.STL
HIPS testing for support material: http://devel.lulzbot.com/filament/HIPS/
Dual extruders and the AO-101: https://forum.lulzbot.com/t/dual-extruders-and-the-ao-100/41/1
TAZ testing: http://devel.lulzbot.com/TK-0/TestObjects/dual/