first print trash; extruder "clicking" noises
Finally got the printer assembled, got all of the calibrations to succeed etc. Tried the "first print" (prusa keychain straight from the included USB) and it went poorly. I didn't change any of the default settings (temperature, speed, etc). I used the included orange PLA. I'm new at this so please forgive incorrect terms.
I stopped the print at around 50% because the nozzle was running into and scraping away what it had already printed (layers?), flicking bits of dried filament all over the place. It was also making the same noise in the video included in @leon-m's post[1]. At first, I thought this noise was the z-axis jamming but as best I can tell, it's the extruder moving the nozzle up(?), and then some kind of spring tension releases and it slams back down. This happens a few times per second and the sound is the same as in the video.
I'm not positive, but I think this also ruined the first side of the included print sheet. I can't tell if there's a thin layer of filament material that I can't get off the sheet, or if the extruder carved the pattern of the keychain into the print sheet. Either way, it's no longer a smooth sheet. Since I only have one more side to ruin, I'm hesitant to try again until I have some idea of what's going on.
Possibly related: After the failed print, I ran the z-axis calibration test again to make sure that was working properly. It was fine. The next test is the "load cell" so I tried to do that one. This test succeeded during the initial calibration, but now the printer keeps saying I "didn't touch the nozzle or touched it too soon". I've tried about 10-12 times. I also tried unloading the filament and re-running this test, got the same result. I can see on the display the little horizontal line moving when I touch the nozzle, but the test isn't able to pass to the printer's satisfaction for some reason anymore. As best I can tell, the nozzle moves freely up and springs back down.
thanks