The duct should be printed from ABS, ASA or Nylon (I printed from ABS-CF). The duct collector can be printed from any plastic, since it is not subject to significant thermal loads.
For assembly, you will need screws:
I recommend buying better quality fans. The cheapest ones have case sizes that vary greatly even within the same batch. I bought this one from creality:
https://sl.aliexpress.ru/p?key=KwDgrs4
_
Thanks to Kingsidorak for the step file of sprite assembly:
https://grabcad.com/library/creality-sprite-extruder-work-in-progress-1
| Duct_Collector_Double.STEP | 834.0KB | |
| Duct_Collector_Double.STL | 9.1MB | |
| Fan_Duct_CHT_Double.STEP | 4.2MB | |
| Fan_Duct_CHT_Double.STL | 27.9MB | |
| Fan_Duct_Orig_Double.STEP | 4.3MB | |
| Fan_Duct_Orig_Double.STL | 29.0MB | |
| Sprite_Extruder_Double4020.STEP | 12.2MB |
