I don’t know if this is a software (Cura) or hardware (Taz 4) or firmware issue or ?..
I just updated to have a dual head extruder on our Lulzbot Taz 4. I have downloaded a few different dual extruder objects from Thingaverse and then tried printing them. They print okay, but each print also adds a square tower beside the print object. It is the same height and it is made up of alternating layers of from the two print heads. The “tower block” is not visible on Cura.
It seems to be a waste of filament and time …
Any ideas where this “block tower” is coming from and how to stop it from happening?