Flexible Duct Fan Connections

thingiverse

I added a laser to my 3D printer and required a solution to exhaust fumes outside. These two pieces are designed to attach to the ends of 4" flexible duct for optimal ventilation. The 'Fan Duct' has an opening and holds a pattern for a 3.5" computer fan. I bolted them together with the back wall of the printer case in between, as shown. The 'Fan Exhaust' fits the same 4" duct work and can sit freestanding on a window sill. In the picture, I chose to connect it to a full window cover to prevent excess heat loss during winter months. Both parts can be printed at any resolution without supports.