E3D air duct

Hey,

I made this air duct for a E3D V6 hot end. It's for an 40 mm fan, The original 30 mm air fan don't really get enough air to the hot end for that reason i mad this one. The fan is a CFM-4010-03-20 from CUI Inc. which runs on 5V and has an air flow of 10 CFM(about 17 m³/h). I'm using M4 Heat-Set Inserts for Plastics which can be ordered here:
https://www.mcmaster.com/#94180a351/=1crfn7g
The whole thing is a test part for my new printer.