Thanks for your long answer, but with fresh opend filament, which I after all tested in 2 other printers and printing fine, causing a total STUCK filament in the feeder inside the AMS, no one can tell me that is a bad spool or has something to do with PTFE tubes....I had the same again with a ABS spool I printed fine a day before and was in the meantime in a Silica Box with under 10% humidity. Also the power cycle, has not worked. That is one of the first things everybody tries, or? After the power cycle, the filament was still stuck (mechanically stuck) inside the feeder and the printer itself said that all is fine BIT was not able to grab it and load. Again, the filament was STUCK in the FEEDER, not in any of the PTFE tubes! you can see it in the microscope view. the filament was somehow wider as normal , made it through all PTFE tubes to be fully stuck / blocked inside the AMS Feeder Mechanism (with the grey knob you have to push to load the filament) Good to hear that yours working flawless, mine not. I had again problems, this time with endless searching for the homeposition, until I power cycled and then it worked, again. Maybe something is wrong with mine, i have no idea. Another Bambu X1 User wrote me an email and we exchanged 3MF files, HE can print my problems without problems, so it´s not the gcode, for some of the other problems. But a stuck filament inside the feedrer, not the PTFE tube, that I have to really pull HARD to remve it, is not normal. But again, thanks for your comment. Happy printing Sandor - DM4DS

@@DM4DS Thank you for clarification. We have very different experiences. When I recommended power cycling it was for a different reason. 1.Disconnect last ptfe tube from filament buffer to the coupler on the back of the machine. 2. power cycle. 3. Run a load filament command. 4. This will push out the filament but it will keep flowing since the ptfe line is disconnected. 5. Stop the printer.(power it off) 6. Snip the end. 7. Reconnect the ptfe tube and coupler 8. Rerun a load/unload. I figured the line was able go in one direction so if going back didnt work then going forward would. Either way its unfortunate you have run into issues with the AMS.

@@ashleys3dprintshop Thanks again, but mine was now twice stuck INSIDE of the feeder mechanism on the front of the AMS. Not in the tube under the feeder, no, inside the feeder. Just mm away from the grey knob you push to load the filament, there is a bearing. it was stuck inside the injection molded feeder. Today another user commented that he had the same issue. The printer thinks all is fine. the LED is normal. IF you try to load, it does not work. The printer is not able to grab it. I tryed that after i was not able to remove the filament after "unload". It happend now with PLA+ and ABS . PLA could be heat creap. but ABS? For me it looks something like the printer cuts the filament and somehow pushes it against the already cutted one, but the nozzle too cold to extrude? Makes no sense. In some way the filament must be pushed against something, otherwise it would not be wider in diameter to get stuck in the feeder, but makes it through all the PTFE tubes including the buffer. Your "problem" is different. Happy printing Sandor - DM4DS

​@@DM4DSeven with brand new filaments there are just some the ams doesn't like and doesn't want retract will print all day but wont retract no idea as to why but all problems start at retracting back to ams

@TheOldKenobi - Thanks for your comment - I had the same with ABS again, but stopped making these videos. It is annoying. For PLA, your argument sounds plausible, maybe it was "too warm" and after the cut and unload, it was somehow wider and got stuck in the feeder mechanism itself. The printer was not able to load it by itself, no error, but I was not able to remove it with normal "men power" - I thought: It goes well or the feeder itself is destroyed, as I pulled that strong, the filament came out. I go as far as to say, that a "normal" 50kg person would not be able to pull that hard on the filament to remove it. Shows also that the filament was in good shape, otherwise it would just be snapped. I printed several things now without problems, but also had again problems and "simple" prints. It sometimes like a gamble. A other X1 user wrote me and we exchanged 3MF files, he was able to print my things witout problems, so it´s not the gcode. I still hope it gets better. Thanks for your comment Sandor - DM4DS

@cdd7672 horrible to hear - Mine is now broken again since 3 weeks with a broken extruder and they don´t send parts....worsed service I´ve ever experienced and that with such an expensive printer! I hope you get it fixed. Sandor - DM4DS

Great to hear that yours works without problems . makes me feel that everything turn to the good side and I just can print.

@phaun5055 - Yes I do push the grey button, not just pulling on the filament . The retract fail I had multiple times, it looks for me that the spool backwind is trying to pull out the last 0.5cm and is sometimes not able, especially with empty spools which like to "stand up" if the lid is opened while trying to fix the error. During prints, my lid is always closed, just to clear that. Happy printing, stay healthy Sandor - DM4DS

ticket is open with links to this and the uncutted video - hope this helps to improve everything. stay healthy Sandor - DM4DS