This is one part of the CoPrint system that I made for the Rat Rig install.
The mount for the Chroma Head
https://www.printables.com/model/1191837-coprint-mount-for-rat-rig-v-core-3
The author remixed this model.
I used the hole pattern from the original mount, after a number of changes i came up with the current design. It mounts on the 3030 extrusion on the top rear of the Rat Rig using bolts and t-nuts. There are numbers on the top to identify the cables and labels on the bottom.
I used 2mm x 20mm screws to attach the mount to the back of the KCM.