Alternative Nozzle


So I backed the Kickstarter for the Tungsten nozzle, and they just sent a survey and that raised a few questions.
Tungsten Nozzle Kickstarter

I suppose the Flux uses M6 thread? and we know it is 1.75mm.
But there is a question about Coating, and they warn that some printers use the nozzle as a electrical conductor for calibration, is that the case for the Flux?


Flux uses a “force sensor”, it does not require conductivity.