Annular duct

I wanted an annular cooler to help get more uniform cooling on my parts, I noticed edge curling and artifacting on the side opposite the cooler duct so I decided to design an annular cooler that would just snap in where the existing duct was.

This prints without support, all the support is built into the design. It's printed with PLA which seems to cope with the heat pretty well and hasn't melted onto any prints so far. I haven't been running it long, but it seems to work so far!

Designed in OnShape.

**Updated 2021-02-05**
Increased internal volume by raising ceiling height, this allows for a less restricted flow for better cooling. Recommend printing with PETG.
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This isn't really a remix since it's a unique design, but it's designed to fit this extruder: https://www.thingiverse.com/thing:1383913