Hinged Extruder Cooler - Anet A8

Looking through Things for the extruder cooling fan, I saw many options. I had an idea of what I wanted to do, so I started with a couple of objects I found here. Something with a hinge would give me ready access but nothing suited me. So, I imported some stuff into SketchUp and started working on it.

I had already cut the heat sink, leaving the bottom five ribs mounted to the extruder frame. This took care of helping keep the heat away from the filament but I knew I should have more air