I have a brand new MOARStruder, running latest Lulzbot Cura on a 2 day old Taz 6 with the latest MOARStruder firmware and all factory settings on the “Standard” print profile.
As we know, Cura varies fan speed as the print progresses or when minimum layer time has not been met. The issue is that at 24% Fan speed (which I assumed was ramped up from 0%), the fans don’t have enough current to start spinning. This leads to a lack of cooling for the first few layers, which results in rough infill. I managed to start the fans by carefully pushing them to get them started, and they are now happily spinning at 24%.
Has anyone else noticed this on their toolheads? It should be easy to test, simply set the fan to a low level and slowly ramp up to see at what point the fans spin.
A fix would be to “blip” the fans to 100% for a second to get them spinning, then the inertia will allow the fan assembly to continue rotating at low fan speeds. Does Marlin or Cura have this feature? I found it in Simplify3D but would rather have a good working out of box experience.