Bulldog / Hexagon twin fan shroud
thingiverse
This is a replacement part designed for the Ooznest Prusa i3 hot end fan shroud featured on http://www.thingiverse.com/thing:659585 , ensuring seamless integration with original nuts and bolts. The new component accommodates two 25mm fans, one directed at the hot end, just like the original, while the other points towards the extruder barrel to prevent "heat creep" during PLA printing. Unfortunately, I was unable to achieve long-duration PLA prints using my Ooznest Prusa i3 with the original fan shroud, as the filament would get stuck in the extruder. However, adding extra cooling along with disabling retraction did provide a temporary solution.
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