Anet A6 40mm Part Cooling Fan Ducts

These are a couple of designs for part cooling fan ducts which use 40mm fans.

I actually think this is a partly failed project as I am not actually using these parts and have reverted back to the stock radial cooling fan. This is because I originally decided to add a 40mm axial fan due to the noise of the radial fan. I didn't realise while I was designing these parts that most 40mm fans are quite underpowered for a part cooling fan role. It is possible to buy more powerful 40mm fans (particul