eragonsmith

Good afternoon, I have an UM3 printer and I want to use abrassive material, usually carbon black filled filament. I would like to know if you have tested these material and if it is possible to change the nozzle to other more resistant. I know it is at my own risk but any piece of advice is really welcome. Searching I found solex nozzle and they sell something called everlast nozzle. I know it's another company but I am trying to design some experiment and I need that kind of materials with non-zero conductivity. Thank you very much in advance.