So I have this theory, and wondering if anyone else has thought of this or knows if it is actually a "thing" already or not.. I remember reading a post somewhere (probably here) mentioning that someone has not yet gotten "good prints" on a dual extruder setup, they just hadn't figured out the best settings yet and all that. That spawned this idea, when you are printing with just one of the 2 extruders, using ABS, what if the second extruder is actually acting against you, micro-cooling the plastic as it repeatedly passes over it? At the very least having that room temprature piece of metal passing .1mm above the plastic just layed down can't be doing it any favors. Wouldn't it even act as almost a heatsink, helping to cool down things it passes over a little faster, leading to less than perfect prints due to the plastic not all cooling at same rate?
I wonder if it would get better prints by heating that second extruder for prints it is not being used on... That's my theory. Heat up that second extruder when not in use, doesn't have to be plastic melting hot, maybe just 100 or 150 or something, just hot enough so it doesn't contribute to the plastic cooling down as it passes over it. Something like this would be very hard to proove either way, unless the results were so drastically different that you could conclude nothing else other than it must have been helping.
Anyone have thoughts on this? Think I might be on to something here? Or not?