Prusa I3 X carriage mount with blower cooling, as shown with stock MK7 metal extruder, will work for other direct extrudes too. Blower nozzle is designed for M6X30mm hotend barrel. Light weight and compact X carriage design, no zip tie for LM8UU. Thin wall structure x carriage design ensure rigidity, top LM8UU mount is designed with flexibility to accommodate X rod misalignment. Blower nozzle have been tuned to be printable with bare minimum bottom support. Brim should be turn on for both parts. Print both parts as laid out in STL, turn on brim and support.