Adding the dual extruder

My TAZ 5 is the single extruder that takes 3mm filament.
Is it possible to add a 1.75 as the second extruder?

many thanks
Shaun Hamontree

You would need to source a 1.75mm hexagon barrel and tip, and print the 1.75mm extruder body out of devel.lulzbot.com, but yes it is possible.