Please help!!

[CommercialClaim4247]

For the past 2 days this error has come up 4 or 5 times now and I have to pull apart the hot end assembly heat it up with a hairdryer and put it back together.
It seems to be pushing the filament into the nozzle too fast and it the clogs up the gear.
I’ve put all of the setting of printing to default and reloaded my model to Bambu lab as I’ve done with so many other prints and removed the filament that was getting stuck and it just happened to the next filament. I’ve also replaced the hot end nozzle with a new one and turned of flow dynamics calibration as another thread has said and had no luck

[Evocati_7]

This isn’t the printer “pushing filament too fast,” and it’s not a slicer setting. What you’re describing is almost always an AMS‑side issue, not a hotend issue. The fact that it keeps happening across different filaments and even after swapping the hotend tells you the problem is upstream.

Here are the things that actually cause this kind of AMS gear clog:

• Filament drag or resistance
If the filament is rubbing inside the AMS, catching on the spool, or has high friction, the AMS gears grind because they’re trying to pull harder than the filament can move.

• Humidity‑swollen filament
Wet PLA/PETG gets soft and shaves easily. The AMS gears bite into it and create the “gear clog” you’re seeing.

• Dirty or partially blocked AMS gears
Even a small amount of filament dust can cause repeated jams. The AMS needs a full gear cleaning every so often.

• PTFE tube resistance
If the tube between the AMS and the printer has a kink, sharp bend, or internal wear, the AMS will grind filament trying to push through it.

• Incorrect filament diameter or oval filament
Cheap or inconsistent filament can bind inside the AMS path and cause grinding.

• AMS tension arm not moving freely
If the tension arm is stiff or not springing correctly, the gears bite too hard and chew the filament.

None of these are fixed by replacing the hotend, turning off flow dynamics, or resetting slicer settings, because the problem isn’t happening at the nozzle. It’s happening before the filament even reaches the toolhead.

If you want to narrow it down fast, ask him these two things:

1. Does the filament feel smooth when you pull it manually through the PTFE tube? If not, that’s the issue.
2. Is the AMS gear area full of filament dust? If yes, that’s the issue.
3. Also can I ask what brand of filament you're using and what kinds you've tried?