Front Titan Aero 360 Layer Fan Shroud

Edit 2/27/18: Issue where version 2 prevented screws from reaching motor and added thickness hitting tensioning gear is fixed

Edit 2/7/18: Version 2 is uploaded! Hugely strengthened and fan shroud gives more clearance for heating block

I didn't like that the original had the fan orientated so that airflow was blocked, so I mirrored part of it to flip the fan around.

Also changed to use M4 screws for securing the fan instead of M3

Unlike the original one from FDM_Guru, the dimensions