I saw this style of kinematics and wanted to make it. It uses Igus 1" pitch lead screws (except Z: T10x2) and their linear rails for XYZ. Full water cooling and a V6 volcano with a 0.2 nozzle (it was cheap). Everything will be hidden as best I can as a challenge to myself, so the skirts in the picture are not shown. It will be 150mm cubed volume which is really tight tolerance to achieve with these rails.

Currently, I am having a hard time figuring out how to hide/tidy the hotend cabling/coolant lines. I thought of a brace from the bottom center to the Z tower to jump over, or an umbilical cord from said bottom center straight to the hotend. Not sure.