@2c1a2dac @5756e48c Yeah, I guess that makes sense, but at the same time, this means the hardened steel nozzle is unusable: you have to bump 10 degrees anyway, and if that makes heat creep so likely, it's gonna be a problem no matter what. Consider PC-CF, for instance! Plus, several other enclosed printers run hardened nozzles by default without such issues (X1C for instance), so it's just a bad hotend design IMHO.

I couldn't even manually feed filament _in_ when trying to cold pull. 

 @2c1a2dac @5756e48c To clarify: imagine if, instead of ABS, I wanted to run ABS-GF. I need a hardened nozzle, and to maintain the same flow, I'd need a 10C bump. Yes, if I use it _less_, heat creep is less likely, but if I mostly print ABS-GF (which Qidi seem to expect, since they sell the stuff), I'll hit heat creep issues anyway.