MODIX BIG IDEX Griffin: Duct 2 mặt cho Volcano Hotend

Hello
here is my version of duct for printers by MODIX with IDEX system and with Griffin volcano heads. 

I use printer with 0.8 nozzle and I want to use also 1.0 or 1.2 nozzles and there starts to be very dificult to cool down printed parts in time. Mainly when all of 3 heating beds are switched on an in the enclosure of the printer is too hot (even when enclosure case is opened). Original duct seemd have not enough power to cool down printed parts especially when printing thin walls or tiny corners and so. Prints colapsed a lot. 

My design of dust improved cooling a lot. 

Primary and secondary heads are little bit different. You can download models for both of them.
I know that shape is not perfect and I am open for other modifications and your versions but this works much better than original duct. 

Please enjoy and share your experiences.