I took this awesome model by Dgarcias:
https://cults3d.com/en/3d-model/tool/hemera-volcano-double-fan-4020-mount
and modified it from the full size Hemera to the XS model. I also stretched the fan outputs out slightly to line up with the nozzle on the Revo direct drive version. I changed it from 4020 fans to 5015s. My version's not perfect but it works really well.
********* V 2.0 **********
Added an LED Mount for people who's toolhead has an LED output (like Neptune 4s)
Added a 3rd mounting hole for stability
********* V 3.0 ***********
Redirected the airflow more towards the bottom of the nozzle.
The author remixed this model.
I modified it from the full size Hemera to the XS. I changed it from the smaller fan size to the 5015 fans. I stretched out the fan output to line up with the nozzle. I added my own mounting plate that lined up with the XS mounting holes.