- Klipper supports the hybrid-corexy and hybrid-corexz kinematics aka Markforged.
- IDEX in Klipper is basically implemented, ref to https://github.com/Klipper3d/klipper/blob/master/config/sample-idex.cfg
- Improvements for IDEX are under development, ref to Support of COPY and MIRROR modes for IDEX
M669is not supported since Klipper controls its kinematics differently- If and how the IDEX implementation is compatible with the Markforged kinematics I do not know