Open source 3D printer with dual extrusion and independent X and Z axis This is a slightly more complicated version of IDEX. This is also a crane style printer modified to add rigidity to handle fast and rapid movement.
Mostly build documentation and discussion can be found here: https://openbuilds.com/builds/zidex.5259/
See link below to explore the fully assembled printer in 3D https://skfb.ly/6vxOx
Full model STEP file posted on Onshape https://cad.onshape.com/documents/0a614a4674c34d17fad6ca34/w/c56dc46b54dffcec5b4223f7/e/2df415dc5961ccc9e1978c58
license: CC - Attribution NonCommercial - Share Alike - CC BY NC SA