Dual mk 8 extruder fan duct and print cooler
by laird, published
Trimmed down the parent so that you can fit two on a Dual extruder Replicator.
It's a minor tweak of the parent, in Tinkercad at https://tinkercad.com/things/2lgOulFFXnr-dual-mk8-extruder-fan-duct-print-cooler.
Print one each of Left and Right things, and follow the quite good instructions on the parent thing.