Venetian gondola - E3D V6 chiller for 3DRag K8200

Was not much satisfied both from the E3D V6 interface to 3Drag and the cooling setup for the metal Hotend . . .
Hence this new design.
It uses 2 x 40 mm fans to both for a great airflow and redundancy (2 is better than one!).
The inlet fan has an aerodynamic insert to avoid turbolence and preserve dynamic pressure.
Both the Fans are oriented to avoid creating cold draughts on the printed piece and it is possible to duct them for encased installation.
The interface to the 3Drag had