I just got the P1S combo with the AMS and it has been running nonstop since December 25th and it is now January 6th and I started a print last night for some new fabric and it got most of the way done with the first layer and then just kept printing in the air. I printed it overnight and when I woke up it was printing in the air. I stopped the print and took off the tool head cover to see if there was any filament backed up and to try and pull the filament out of the nozzle, but the PTEF tube was stuck in there because the filament was tensioned and more of it was not being pulled in. I read a bunch of other posts and figured out that I needed to manually push a bit in and that worked to get it a little bit out but there is still some filament stuck somewhere else in the tool head. I tried to manually use the cutter a couple of times but when I did It did nothing and actually was getting stuck. I also tried heating the hotend and pulling it out but it still didn’t work. After doing all of that I used the manual extrusion thing and the yellow gear just spun as if nothing was in there. When I used it to try and go the other way, it started clicking kinda softly. Does anyone know what is wrong and what I’d have to do to fix it?
It is called heat creep and happens often with PLA and the Bambu hotends.
Get a decent E3D hotend and this won’t happen again.
To fix the mess >
Get it going so at least the filament comes out, let it cool and pull the lot out of the hotend after taking it off.
Check if the inside is clear and same for the nozzle.
For a really bad case you remove the heater and temp sensor to saok the hotend over night in a matching solveny, after which the remaining goo and gunk can be removed quite easy.
Day 2 of printing on the P1S. Also getting the “Cutter Tool Stuck” error. For me, the cutter tool is in fact sticking after the cut action (not releasing). I am having to open the door and manually work the lever until it releases. Not sure if it’s related but shortly after this problem developed I noticed what seems like a missing layer around the entire part.
Try loosening the screw that holds it in a turn or two. If that doesn’t work, look at the Bambu Wiki on changing the extruder gear and take it apart to see if anything is jammed in there. It’s really easy. Hot end = 2 screws. Extruder = 4 Screws. If you can spin the gears freely you don’t have to dissemble the Extruder. The cutter will be in between the two. It’s a simple knife that pivots on that screw mentioned in the beginning and tensioned by a spring. The spring could be caught on something. Don’t be afraid to dig in there and take things apart. It’s built for that. Watch the Bambu Wiki first though.
Have you tried the Hot Hex Wrench unclog (halfway down here)?
Yes, I had an old unclogging tool that was about the same size and headed that up instead and it worked great! (That is how I got my nozzle unclogged)
To get the rest of my hotend unclogged and my cutter to stop sticking, I had to take apart the hotend and pull some filament out of the gears. It wasn’t too hard other than getting the main gear out the first time.