I just received my Dual Extruder Tool Head V2. I have not installed it yet as I am considering returning it.
Others have described “heat creep”. Looking at the tiny micro fans used to cool the heat sinks I can see how the problem will occur. I also see that one fan is in contact with one heat sink. The other fan is approximately 3mm away from its associated heat sink.
I’m sure the tool head can work well but the micro fans may require very narrow margins in the setup.
Has anyone found ways to improve the cooling flow for the hot ends?