Tevo Little Monster - 30mm Heatbreak Fan Vent

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I took inspiration from another fan duct and created this vent to match my other Tevo Little Monster ducts. This vent goes front and back to ensure that no air is blown onto the heat bed or print from the heatbreak cooling fans. There's a gap between the grill to maintain very low static pressure drop. NOTE: I strongly advise ordering some filter wool/mat (I use carbon mat for air-conditioners) and cutting out a small circle to fit into the intake side of this vent to prevent dust buildup in your heatsink and fan. Only a small amount of dust is needed to significantly reduce cooling for the heatsink, while any dust on your fan makes it louder and shortens its lifespan. Lack of cooling on the heatsink is the number one reason for jams/clogs in hotends (E3D units are notorious for this due to their poor fan and heat sink shroud design). If you're running all-metal hotends like everyone should, and you're getting jams, you can almost be certain it's heat-creep causing the issue. I also recommend running your heatsink cooling fans in a dual push-pull configuration, which will cut down on noise and drastically increase cooling even with the restriction added from a filter.