I was planning to try a TPU print. I had a reel from Creality so I loaded it in. It fed through just fine but the AMS says it will work with Generic TPU ? So I tried to unload it but I push on the release the Filament and it won’t let it go?
Thanks in advance.
Assuming you are referring to TPU 95A, no, this does NOT go in the AMS.
Some people have got this to work, but they knew the risks ahead of time.
Bambu Lab do not say TPU can go in the AMS; they do sell a "TPU for AMS’, specifically for the AMS. That works because it is harder and can get through the mechanism.
Have you tried the unload feature of the Device Tab in Bambu Studio?
Have you tried the unload option on the LCD screen on the printer? I have not used an H2D, but I imagine the option is available there as it is for all the other printers.
You may need to apply some gentle pressure to pull it back. You will need to press the tab down on the AMS inlet hole you poked it through to allow it to come back.
If these fail, how to unload it depends on how far it is in the printer.
If it made it to the head, you may need to cut it there, pull it back through the AMS. Then push the other filament into the head, trying to get rid of whatever is in the head.
It may be stuck along the path of the AMS to the head. If this is the case, you may need to disassemble part of the AMS to gain access to it.
Working out exactly where it is stuck, or if a portion broke off, is the key to the fix.
The H2 series has a dedicated port for TPU 95A on the back; you should be using this.
Its most likely wrapped around the stepper motor gears inside the AMS. Power off the AMS (disconnect the cable) and try to pull out the filament. If that fails and it rips, you will need to disassemble the AMS and PTFE tubes to get the left over strands out.
Oh this sounds like fun!!! I appreciate the guidance!!!
Who doesn’t like learning everything you have not wanted to know about how something works right when all you wish to do is print something and enjoy the printer.
Keep us updated, we can help if you get stuck.
Use lots of photos.
So true. I thought I learned everything when I built my Voron 2.5… apparently not ! This will be a Friday night with Bourbon job. So the pictures may start clear and fade !
Bambu wiki has many useful and helpful pages with instructions. Lots of pics and often videos. You’ll get it sorted no problem.
It’s got me through some issues already without problem.
Solution, I did not have to dismantle the AMS. Thank goodness! We cut the TPU at reel, pulled open the feed tube underneath and pulled it out. Looks like it got prematurely hot and got stuck. Sounds like a personal problem 
I appreciate all that responded. Here is a pic of what the filament looked like when pulled out.
This is why I pointed out that TPU 95A is not designed to work in the AMS.
The material does not push up the PTFE path well and only those who really know what they are doing and the risks associated should.
Thankfully, no permanent hardware damage.
Well done for getting it out.
Remember what is said in my solution at the top.
Nice.
Glad it worked out. It has nothing to do with heat but the flexibility. Other soft filament like PLA flex, PEBA etc. will have the same result, dont try it again.
Run ALL tpu directly over the printer and into the head. ALL
Not quite ALL. I think your are forgetting TPU for AMS, and other brand 68D and harder. Those are fine in the AMS as they are almost as hard as PLA and PETG.
Given this thread is for the H2 series, we should provide answers for that.
It has a specific port for TPU 95A.
For all other TPU, softer ones more specifically, follow the guide they provide.
I can just hear my wife… “Read all the words on the page”…
Much appreciated 
Same happened to me with a crappy soft amazon basic tpu. Lucky that I could just yank it out after powering off the AMS. It stretched a lot and I was nervous it would just break in there but after about 2 feet, it cleared. Now that reel is in the trash. I should’ve read these posts before mashing the Load button with leftover material!
To be fair, one would have to read a few hundred thousand posts to get even the basics down in the 3D Printing world. 
I am glad you didn’t have to tear it all apart.
Just had to do this for my AMS 2. Pain in the ■■■ but i def learned.
