This is a remix of @TechSupportGo's dual fan mount for the Robo R1. That houses a v6 hotend (round). Also has been setup with a velocity stack on the front and rear to help air flow from the fan to cool the heat sink. Also has been paired with @sysadrift's revised rear fan mount for the R1+.
May need slight filing with a round file depending on your printers dimensional accuracy.
Also highly recommended to print all of the pieces or atleast the fan shrouds in something higher temp (ABS, PC, etc) so the bottom of the shroud doesnt melt thru after use.
To get most use out of the fans velocity stack it is recommended to print at a low layer height >.1mm
Also is recommened to move the X -90* to print on the velocity stack side down, and again low layer heights that way no supports are needed.