Rostock Mini Fan Duct

A fan duct that allows you to mount a 40mm fan above the extruder mount on the rostock-mini platform. Air is blown down over the top of the extruder to keep the heat down at the bottom where it belongs!
I suggest you try setting your cooling to 25% for extruder cooling (at 100% my extruder couldn't maintain 185 C!). It can cool a print job if you run it at 100%. See a video of me printing my C9 bulb cooling required test part here:
https://www.youtube.com/watch?v=xRc3xJxuWMM