I set about designing this Dual fang after printing a few others out and one thing i realised is they all share one thing(or the ones i printed did), they all attach using the hot end screws.
my design does not, it attaches directly to the hot end backplate using the original mounting holes for the metal cover that came on the printer, and hooks around the side.
This way i have been able to attach the fans and the fangs without touching the hot end at all, Fans are the stock fans 40mm

all you need is one of the original screws from the casing and one that is twice as long that screws in from the back, i got that one from a odds n ends box i have, not sure of the size but easy enough to get.
ive printed a few out and tweeked the design, think iv,e pretty much got it but please let me know if you come across somthing i missed, the clip has been left a snug fit on purpose but can be opened with a bit of sandpaper if needed, depends on your printer i suppose.
more designs comming for different fan setups.
currently doing designs for 5015 blower fan and Noctua NF A4X20 FLX Silent Fan 40 mm.
tips are appreciated :)