Quote Originally Posted by wirlybird View Post
When you put in the ptfe tub for the nozzle do you run it all the way up into the barrel or bottom it out in the nozzle? It seems like one end might have a gap and if so which should it be?
Neither should be short. A gap is an escape path for the filament when it is pressurized by the drive gear pushing on it, a location where it might bend into and jam. You do not want any gaps.