Hi, I recently came into possession of a second-hand AO-100, and was attempting my second print on it when the following happened:
I fired up the printer and it immediately said that it was doing a thermal shutdown, so I shut it all off and verified that everything was cool, then turned it on again to try the print, sliced the print with Slic3r, pasted the gcode into printrun, and told it to start printing.
The temps read out as if it were heating correctly up until 210 C, and then it sat there as if it were having problems getting past 210, it was going back and forth between 210 and 211. I let it stay there for a minute while I was googling the problem, then looked back at the bot and the hot end had melted itself. I looked back at the software and it still read 210, so I shut everything off, removed the hot end. Somehow it heated to at least 240 while still reporting 210, then some filament forced itself between the brass tube and the thermal barrier, and caused the hot end to start to push itself out of the thermal barrier at an angle.
It appears to be the same problem as here, only this person’s hot end didn’t melt itself: https://forum.lulzbot.com/t/temp-reading-stuck/314/1
Now I need to replace the hot end… I’ve got an old MakerGear groove mount hot end, but it doesn’t seem like the mounting plate for it will line up correctly with the extruder without some pretty good sized modifications, so I’m thinking I might just purchase a new Budaschnozzle 2.0c.
Will a Budaschnozzle 2.0c work as a drop in replacement on the AO-100?
Also, I don’t know what happened to cause the temp to not report correctly, is there a troubleshooting guide somewhere I could use to diagnose that and make sure it doesn’t happen again with the new hot end?