JGAurora stepper driver cooling ducts
thingiverse
Untested as-is, let me know if it works. The initial design is pictured, and apparently, I shouldn't have completed it at 4am... I just hacked away until it fit. This should now be correct and ready to go, but the f3d file is included if you want to remix. The duct simply clips down onto the stepper drivers, install a 5015 blower to the duct and assemble. Air is drawn in from the hole under the LCD screen and blown across the drivers to prevent overheating of the drivers. Wire the 5015 to 24v power, I've run from a 12v wallwart externally.
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