To be honest, I haven't read through this whole thread...but...
I would like to print with ColorFabb XT-CF20 Carbon fiber material which is known to wear out the nozzle. So I don't wanna ruin my original UM2 nozzle and additionally install the E3D heater block and a stainless steel nozzle in the second whole of the print head.
So basically when printing with XT-CF20, I simple place the feeder tube into the second nozzle and use this. When printing regular stuff, I would like to use the original nozzle.
I know that the UM2 electronics was prepared for a second extruder, so I guess there should be connectors for a second heater block and a second temperature sensor. So beside the hardware installation all you'll need to say in the software is that you wanna heat Nozzle2 instead of 1 while still using the same feeder stepper.
Is this possible? Anyone has a shopping list for what parts I'll need.
If there are articles about this already in this thread, please feel free to point me to the posts.
Thanks, Netsrac