This is a customized version of the Ender 5 Mercury One.1 mod. I had two 10mm rods lying around that would fit the X axis and wanted to use the MGN12 rail for a custom CNC project instead. Please check the Printables link for more information as well as a FreeCAD file.

I don’t think this should still be called an Ender 5 and this point. Perhaps a Frankender will do.