A tested mount and part cooling solution for the Titan Aero and the standard  Creality X carriage. There are no interferences with the X stepper housing or the X belt tensioner.
Enough space is available between the 5015 part cooling fan and the back of a pancake Nema stepper to fit a heatsink. Total weight including the carriage and rollers is 400g.
I'd suggest printing the parts in PETG or ABS for strength and resistance to heat from the hotend and stepper.
29/9/18:  A revised duct that sites the outlet nozzles 8.5mm lower for use with Volcano hotends has now been added.
5/10/18: BL Touch mount added. V6 and Volcano ducts to suit full size stepper motors added. BL Touch brackets for V6 and Volcano added.
6/10/18: EZABL mount added.
So choose the mount version...ABL or non ABL, the duct to suit your stepper and hotend (pancake stepper or 38mm stepper, V6 or Volcano), and finally the ABL sensor mount.
Apologies. I think I had the wrong file uploaded for the V6 38mm Stepper duct. This is now corrected.
Apology…