Tapered Fan shroud for Hexagon Hotend on Makerfar i3v

I modified the original fan shroud to put a taper on the duct & allow a little more air to hit the hotend. I also cut a groove where it attaches to hotend, so it does not melt as much. The attached openscad file allows you to create the original straight duct, tapered duct and ears to the corners so it adheres better when printing ABS.