To achieve faster speed printing for functional and draft prints, I wanted to try a 1.0mm nozzle with my Neptune 3 Plus. This is the first time I replace a nozzle so I followed YouTube videos and replaced the nozzle. After replacing the nozzle I leveled the bed with manual + automatic leveling. The extruder seemed to be working, taking and extruding the pla filament. Success? Sure not yet .
I started fiddling with cura profiles, increased line width, layer height, temperatures for head and bed, decreased speed… Tried a few times to achieve adhesion and printing. So things looked good. After the trial and errors I was satisfied that I could print now.
I started a 1 and a half hour print. It started well and I went for some tv and started checking the video feed. Things started well, but in time some warping occurred. It was evident that the print would fail. However I wanted to see how things will end up so let it continue. Sure it ended with some spaghetti.
Everything is as expected up until now. So I returned back to stop the spaghetti. But there was a strange blob at the end of the extruded filament spagetti. And the nozzle was there?!? I am still confused how the nozzle ended up out of the extruder being intact.
Any chance you stripped the threads in the heater block and it yeeted the nozzle out?
Seems like a stretch, but the only explanation that comes to mind.
Especially if you attempted the nozzle change while cold. PLA is a hellacious thread locker. It WILL strip aluminum threads.
OP could compare a thread gauge to the female/internal threads on the block to find out. Or, more simply, do two things.
If #1 pulls out a new nozzle… Yeah… replace or rethread (good luck) the block.
If #1 sticks strong but #2 pulls out, replace the nozzle and hope it was just a shitty, undersized, nozzle. I don’t expect this to be the case, but eliminate all simple problems before trying to remedy a (maybe non-existent) larger problem. Troubleshooting 101
I changed the nozzle while the heat block was 200C.
I was afraid of this but turns out threads are still there. As I explained in a previous comment I successfully printed with another 0.8 nozzle.