Well, I managed to make multimaterial prints with TPU using the AMS !
Using ESun TPU95A Green (as a side note this translucide green color is ugly)
Some notes :
- I reduced PTFE length as exlpained here
- I found that TPU can stuck if the extruder push too much on it and it is rewinded, then it often get stuck at the output of the AMS, a good idea is to use a very low “Max Volumetric Speed” for the TPU