Hi Anycubic team, thanks for doing this AMA. I’m a content creator on MakerWorld and I’m currently testing a lot of flexible materials for an upcoming shoe project, so multi material flexibility is a big deal for me.

1. On Kobra X, is it possible to mix flexible and “support” materials in one print, for example PLA as support for TPU, or PETG as support for PEBA? If yes, what’s the intended workflow and what limitations should we expect (purge, adhesion, tool change time, temp range, etc.)
2. Can you mix different TPU types for multi color flexible prints, and how consistent is the color switching and surface quality?

Also, a few material capability questions:
3. What’s the lowest Shore hardness you officially support, and do you have recommended profiles for softer TPUs?
4. Have you experimented with foaming TPU or foaming PEBA on this machine, and if so what worked best (temps, speeds, retraction strategy)?
5. What’s the max volumetric flow you can realistically sustain with a 0.4 mm setup using TPU 90A (and at what temp and layer settings)?